Factoring vs Solving

Factor  $x^2+8x+7$  

• x = 7, x = 1

• (x + 7) (x + 1)

• x = -7, x = -1

• (x - 1)(x - 7)

Solve  $y=x^2+8x+7$  

• x = 7, x = 1

• (x + 7) (x + 1)

• x = -7, x = -1

• (x - 1)(x - 7)

Which of these are factors of  $x^2-2x-15$  . Choose all that apply.

• x + 5

• x - 5

• x + 3

• x - 3

Find the x-intercepts of  $x^2+7x=0$  

• x = -7 only

• x = 7 only

• x = 0 and x = -7

• x = 1 and x = -7

Find the zeros of  $4x^2-20x=0$  

• x = 4 and x = 5

• x = 0 and x = 5

• x = 4 and x = -5

• x = 0 and x = -5

Completely factor  $3x^2-15x$  

•  $x\left(3x^{ }-15\right)$  

•  $3x\left(x-5\right)$  

•  $3x^2\left(x-5\right)$  

•  $3x\left(x^2-5\right)$  

Which of the following are roots of  $x^2+12x+32=0$  ? Choose all that apply

• x = 8

• x = -8

• x = 4

• x = -4

Solve  $y=x^2+4x-21$  

• (x + 7)(x - 3)

• (x - 7)(x + 3)

• x = -7 and x = 3

• x = 7 and x = -3

Solve  $x^2-144=0$  

• x = 12

• x = -12 and x = 12

• x = 144

• x = -144 and x = 144

Find the zeros of  $5x^2-12x-32=0$  

• x = 20 and x = -8

• x = 4 and x = -8

• x = 4 and   $x=-\frac{8}{5}$  

• x = 4 and  $x\ =\ -\frac{5}{8}$