Back to Intermediate Algebra 2e

1.1 Use the Language of Algebra

Prime factorization and least common multiples, variables and order of operations, combining like terms, and turning English phrases into expressions.

Intermediate Algebra 2e, 1.1 Use the Language of Algebra

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54 exercises

1.1 Exercise 1

Is 5,625 divisible by ⓐ 2? ⓑ 3? ⓒ 5 or 10? ⓓ 6?

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1.1 Exercise 2

Is 4,962 divisible by ⓐ 2? ⓑ 3? ⓒ 5? ⓓ 6? ⓔ 10?

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1.1 Exercise 3

Is 3,765 divisible by ⓐ 2? ⓑ 3? ⓒ 5? ⓓ 6? ⓔ 10?

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1.1 Exercise 5

Find the prime factorization of 80.80 .

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1.1 Exercise 6

Find the prime factorization of 60.60 .

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1.1 Exercise 8

Find the LCM of 9 and 12 using the Prime Factors Method.

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1.1 Exercise 9

Find the LCM of 18 and 24 using the Prime Factors Method.

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1.1 Exercise 11

Simplify: 30÷5+10(3−2).30 \div 5 + 10 \left(3 - 2\right) .

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1.1 Exercise 12

Simplify: 70÷10+4(6−2).70 \div 10 + 4 \left(6 - 2\right) .

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1.1 Exercise 14

Simplify: 9+53−[4(9+3)].9 + 5^{3} - \left[4 \left(9 + 3\right)\right] .

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1.1 Exercise 15

Simplify: 72−2[4(5+1)].7^{2} - 2 \left[4 \left(5 + 1\right)\right] .

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1.1 Exercise 17

Evaluate when x=3,x = 3 , ⓐ x2x^{2} ⓑ 4x4^{x} ⓒ 3x2+4x+1.3 x^{2} + 4 x + 1 .

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1.1 Exercise 18

Evaluate when x=6,x = 6 , ⓐ x3x^{3} ⓑ 2x2^{x} ⓒ 6x2−4x−7.6 x^{2} - 4 x - 7 .

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1.1 Exercise 20

Simplify: 3x2+7x+9+7x2+9x+8.3 x^{2} + 7 x + 9 + 7 x^{2} + 9 x + 8 .

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1.1 Exercise 21

Simplify: 4y2+5y+2+8y2+4y+5.4 y^{2} + 5 y + 2 + 8 y^{2} + 4 y + 5 .

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1.1 Exercise 23

Translate the English phrase into an algebraic expression:

ⓐ the difference of 14x214 x^{2} and 13 ⓑ the quotient of 12x12 x and 2 ⓒ 13 more than zz
ⓓ 18 less than 8x8 x

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1.1 Exercise 24

Translate the English phrase into an algebraic expression:

ⓐ the sum of 17y217 y^{2} and 19 ⓑ the product of 77 and y ⓒ Eleven more than x ⓓ Fourteen less than 11a

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1.1 Exercise 26

Translate the English phrase into an algebraic expression:

ⓐ four times the sum of p and q
ⓑ the sum of four times p and q

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1.1 Exercise 27

Translate the English phrase into an algebraic expression:

ⓐ the difference of two times x and 8
ⓑ two times the difference of x and 8

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1.1 Exercise 28

The length of a rectangle is 14 less than the width. Let w represent the width of the rectangle. Write an expression for the length of the rectangle.

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1.1 Exercise 29

The length of a rectangle is 7 less than the width. Let w represent the width of the rectangle. Write an expression for the length of the rectangle.

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1.1 Exercise 30

The width of a rectangle is 6 less than the length. Let l represent the length of the rectangle. Write an expression for the width of the rectangle.

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1.1 Exercise 31

June has dimes and quarters in her purse. The number of dimes is seven less than four times the number of quarters. Let q represent the number of quarters. Write an expression for the number of dimes.

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1.1 Exercise 32

Geoffrey has dimes and quarters in his pocket. The number of dimes is eight less than four times the number of quarters. Let q represent the number of quarters. Write an expression for the number of dimes.

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1.1 Exercise 33

Lauren has dimes and nickels in her purse. The number of dimes is three more than seven times the number of nickels. Let n represent the number of nickels. Write an expression for the number of dimes.

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1.1 Exercise 34

Use the divisibility tests to determine whether each number is divisible by 2, by 3, by 5, by 6, and by 10.

84

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1.1 Exercise 36

Use the divisibility tests to determine whether each number is divisible by 2, by 3, by 5, by 6, and by 10.

896

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1.1 Exercise 38

Use the divisibility tests to determine whether each number is divisible by 2, by 3, by 5, by 6, and by 10.

22,335

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1.1 Exercise 40

Find the prime factorization.

86

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1.1 Exercise 42

Find the prime factorization.

455

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1.1 Exercise 44

Find the prime factorization.

432

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1.1 Exercise 46

Find the least common multiple of each pair of numbers using the prime factors method.

8, 12

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1.1 Exercise 48

Find the least common multiple of each pair of numbers using the prime factors method.

28, 40

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1.1 Exercise 50

Find the least common multiple of each pair of numbers using the prime factors method.

55, 88

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1.1 Exercise 52

Simplify each expression.

23−12÷(9−5)2^{3} - 12 \div \left(9 - 5\right)

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1.1 Exercise 54

Simplify each expression.

2+8(6+1)2 + 8 \left(6 + 1\right)

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1.1 Exercise 56

Simplify each expression.

20÷4+6(5−1)20 \div 4 + 6 \left(5 - 1\right)

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1.1 Exercise 58

Simplify each expression.

3(1+9·6)−423 \left(1 + 9 \cdot 6\right) - 4^{2}

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1.1 Exercise 60

Simplify each expression.

2[1+3(10−2)]2 \left[1 + 3 \left(10 - 2\right)\right]

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1.1 Exercise 62

Simplify each expression.

8+2[7−2(5−3)]−328 + 2 \left[7 - 2 \left(5 - 3\right)\right] - 3^{2}

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1.1 Exercise 64

Evaluate the following expressions.

When x=2,x = 2 ,
ⓐ x6x^{6}
ⓑ 4x4^{x}
ⓒ 2x2+3x−72 x^{2} + 3 x - 7

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1.1 Exercise 66

Evaluate the following expressions.

When x=4,y=1x = 4 , y = 1
x2+3xy−7y2x^{2} + 3 x y - 7 y^{2}

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1.1 Exercise 68

Evaluate the following expressions.

When x=10,y=7x = 10 , y = 7
(x−y)2\left(x - y\right)^{2}

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1.1 Exercise 70

Simplify the following expressions by combining like terms.

7x+2+3x+47 x + 2 + 3 x + 4

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1.1 Exercise 72

Simplify the following expressions by combining like terms.

10a+7+5a−2+7a−410 a + 7 + 5 a - 2 + 7 a - 4

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1.1 Exercise 74

Simplify the following expressions by combining like terms.

3x2+12x+11+14x2+8x+53 x^{2} + 12 x + 11 + 14 x^{2} + 8 x + 5

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1.1 Exercise 76

Translate the phrases into algebraic expressions.


ⓐ the difference of 5x25 x^{2} and 6xy6 x y
ⓑ the quotient of 6y26 y^{2} and 5x5 x
ⓒ Twenty-one more than y2y^{2}
ⓓ 6x6 x less than 81x281 x^{2}

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1.1 Exercise 78

Translate the phrases into algebraic expressions.


ⓐ the sum of 4ab24 a b^{2} and 3a2b3 a^{2} b
ⓑ the product of 4y24 y^{2} and 5x5 x
ⓒ Fifteen more than mm
ⓓ 9x9 x less than 121x2121 x^{2}

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1.1 Exercise 80

Translate the phrases into algebraic expressions.


ⓐ eight times the difference of yy and nine
ⓑ the difference of eight times yy and 9

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1.1 Exercise 82

Translate the phrases into algebraic expressions.


ⓐ five times the sum of 3x3 x and yy
ⓑ the sum of five times 3x3 x and yy

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1.1 Exercise 84

Translate the phrases into algebraic expressions.

Eric has rock and country songs on his playlist. The number of rock songs is 14 more than twice the number of country songs. Let c represent the number of country songs. Write an expression for the number of rock songs.

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1.1 Exercise 86

Translate the phrases into algebraic expressions.

Greg has nickels and pennies in his pocket. The number of pennies is seven less than three times the number of nickels. Let n represent the number of nickels. Write an expression for the number of pennies.

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1.1 Exercise 88

Explain in your own words how to find the prime factorization of a composite number.

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1.1 Exercise 90

Explain how you identify the like terms in the expression 8a2+4a+9−a2−1.8 a^{2} + 4 a + 9 - a^{2} - 1 .

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Adapted from Intermediate Algebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Intermediate Algebra 2e. Imported at revision 77a933c.