Chapter 6

Elementary Algebra · 475 exercises

Problem 1

Factor completely. $$ 2 x 5 y 2-12 x 4 y 3 $$

3 step solution

Problem 1

Determine the missing factor. $$ 12 x 3-24 x 2+4 x=4 x(\quad ? \quad) $$

4 step solution

Problem 1

One integer is five times another. If the product of the two integers is \(80,\) then find the integers.

7 step solution

Problem 1

Determine whether the given set of values are solutions to the quadratic equation. $$ \\{-3,5\\} ; x_{2}-2 x-15=0 $$

4 step solution

Problem 1

Factor. $$ 3 x 2-14 x-5 $$

9 step solution

Problem 1

Give the prime factorization of each number and determine the GCF. $$ \text { 18, } 24 $$

4 step solution

Problem 1

Are the following factored correctly? Check by multiplying. $$ x 2+5 x-6=(x+2)(x+3) $$

5 step solution

Problem 1

Factor completely. $$ x_{2}-9 $$

4 step solution

Problem 2

Factor completely. $$ 18 x 5 y 3-6 x 4 y 5 $$

3 step solution

Problem 2

Determine the missing factor. $$ 10 y 4-35 y 3-5 y 2=5 y 2(\quad ? \quad) $$

4 step solution

Problem 2

One integer is four times another. If the product of the two integers is \(36,\) then find the integers.

6 step solution

Problem 2

Factor. $$ 5 x 2+7 x+2 $$

6 step solution

Problem 2

Give the prime factorization of each number and determine the GCF. $$ 45,75 $$

4 step solution

Problem 2

Are the following factored correctly? Check by multiplying.] $$ x 2+6 x+16=(x+8)(x-2) $$

4 step solution

Problem 3

Factor completely. $$ 5 x 2+20 x-25 $$

5 step solution

Problem 3

Determine the missing factor. $$ -18 a 5+9 a 4-27 a 3=-9 a 3(\quad ? \quad) $$

5 step solution

Problem 3

An integer is one more than four times another. If the product of the two integers is 39 , then find the integers.

8 step solution

Problem 3

Give the prime factorization of each number and determine the GCF. $$ 72,60 $$

4 step solution

Problem 3

Are the following factored correctly? Check by multiplying. $$ y 2+2 y-8=(y+4)(y-2) $$

4 step solution

Problem 4

An integer is 3 more than another. If the product of the two integers is \(130,\) then find the integers.

7 step solution

Problem 4

Factor completely. $$ 4 x 2+10 x-6 $$

6 step solution

Problem 4

Determine the missing factor. $$ -21 x 2 y+7 x y 2-49 x y=-7 x y(\quad ? \quad) $$

5 step solution

Problem 4

Determine whether the given set of values are solutions to the quadratic equation. $$ \\{-3 / 4,3 / 4\\} ; x_{2}-916=0 $$

5 step solution

Problem 4

Give the prime factorization of each number and determine the GCF. $$ 168,175 $$

4 step solution

Problem 4

Are the following factored correctly? Check by multiplying. $$ y 2-10 y+21=(y-3)(y-7) $$

4 step solution

Problem 5

An integer is 2 less than twice another. If the product of the two integers is \(220,\) then find the integers.

8 step solution

Problem 5

Factor completely. $$ 24 x 3-30 x 2-9 x $$

7 step solution

Problem 5

Factor out the GCF. $$ 22 x 2+11 x $$

4 step solution

Problem 5

Determine whether the given set of values are solutions to the quadratic equation. $$ \\{-3,2\\} ; x 2-x-6=0 $$

4 step solution

Problem 5

Factor. $$ 2 x 2+9 x-5 $$

7 step solution

Problem 5

Give the prime factorization of each number and determine the GCF. $$ 144,245 $$

3 step solution

Problem 6

An integer is 3 more than twice another. If the product of the two integers is \(90,\) then find the integers.

8 step solution

Problem 6

Factor completely. $$ x 2-18 x+72 $$

4 step solution

Problem 6

Factor out the GCF. $$ 15 y 4-5 y 3 $$

3 step solution

Problem 6

Determine whether the given set of values are solutions to the quadratic equation. $$ \\{-5,1\\} ; x 2-4 x-5=0 $$

3 step solution

Problem 6

Factor. $$ 7 x 2+20 x-3 $$

7 step solution

Problem 6

Give the prime factorization of each number and determine the GCF. $$ 15,50,60 $$

4 step solution

Problem 7

One integer is 2 units more than another. If the product of the two integers is equal to five times the larger, then find the two integers.

6 step solution

Problem 7

Factor completely. $$ 6 x 3+27 x 2-9 x $$

7 step solution

Problem 7

Solve. $$ (x-3)(x+2)=0 $$

4 step solution

Problem 7

Give the prime factorization of each number and determine the GCF. $$ 14,63,70 $$

4 step solution

Problem 8

A positive integer is 1 less than twice another. If the product of the two integers is equal to fifteen times the smaller, then find the two integers.

6 step solution

Problem 8

Factor out the GCF. $$ 12 a 5+20 a 3-4 a $$

6 step solution

Problem 8

Solve. $$ (x+5)(x+1)=0 $$

3 step solution

Problem 8

Factor. $$ 3 x 2+x-2 $$

5 step solution

Problem 8

Give the prime factorization of each number and determine the GCF. $$ 12,48,125 $$

4 step solution

Problem 8

Are the following factored correctly? Check by multiplying. $$ x 2+5 x+14=(x-2)(x+7) $$

3 step solution

Problem 9

A positive integer is 3 more than twice a smaller positive integer. If the product of the two integers is equal to six times the larger, then find the integers.

6 step solution

Problem 9

Factor completely. $$ 5 x 3-30 x 2-15 x+90 $$

5 step solution

Problem 9

Factor out the GCF. $$ 9 x 3 y 2-18 x 2 y 2+27 x y 2 $$

3 step solution

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