Test 12

Factor Completely:

x⁴ - 9x²

• x²(x + 3)(x - 3)

• (x² + 3x)(x² - 3x)

• (x² + 9)(x - 3)(x + 3)

• x²(x² - 9)

Tags

CCSS.HSA.APR.C.4

Factor Completely:

4k² + 24k + 36

• (2k + 6)²

• (2k - 6)²

• (2k - 6)(2k + 6)

• 4(k + 3)²

Tags

CCSS.HSA.APR.C.4

Factor Completely: 5x² - 11x + 6

• (5x + 6)(x - 1)

• (5x - 6)(x - 1)

• (2x - 7)(x - 3)

• (5x - 6)(x + 1)

What are the factors of
25x² - 81?

• (5x - 9)(5x + 9)
• (5x - 9)(5x - 9)
• (5x + 9)(5x + 9)
• Cannot be factored

Tags

CCSS.HSA.APR.C.4

A rectangle has an area of 2x² – 19x +45 ft². What are the dimensions of the rectangle?

• (2x - 9)(x - 5)

• (2x + 9)(x + 5)

• (2x - 5)(x - 9)

• (2x - 5)(x + 9)

What are the binomial factors of  $x^2+7x-18$  

(Pick 2 answers)

•  $\left(x-9\right)$  

•  $\left(x+9\right)$  

•  $\left(x-2\right)$  

•  $\left(x+2\right)$  

If  $\left(x-3\right)$  is a factor of  $x^2+x-12$  , then the other factor is?

•  $\left(4x-3\right)$  

•  $\left(3x-4\right)$  

•  $\left(x-4\right)$  

•  $\left(x+4\right)$  

Tags

CCSS.HSA.APR.B.2

Written in factored form, the trinomial $2y^2+26y+80$  is equivalent to:

•  $2\left(y-5\right)\left(y-8\right)$  

•  $\left(2y+5\right)\left(y+8\right)$  

•  $2\left(y+5\right)\left(y+8\right)$  

•  $\left(y+5\right)\left(2y+16\right)$  

If $\left(x-3\right)$  and  $\left(x+7\right)$  are the factors of the trinomial  $x^2+bx-21$  , what is the value of b?

•  $-3$  

•  $-4$  

•  $7$  

•  $4$  

What is the GCF of 28ab and 42b?

• 4b

• 6b

• 7b

• 14b