Solving Quadratics by Factoring When a Is 1

What is the first step in solving 
(x + 2)(x - 3) = 0      ?

• Plug in zero for x

• Solve for x

• FOIL

• Set each binomial factor equal to zero

Factor
k² - 2k - 24

• (k+4)(k-6)

• (k+4)(k+6)

• (k+6)(k-1)

• (k-4)(k+6)

What are the values of x when y = 0?

• { -3, 1 }

• { -2 }

• { -3, -1 }

• { 1, 3 }

Solve

(n +7)(n + 9) = 0

• n = -7; n = 4

• n = 7; n = -9

• n = -3; n = 10

• n = -7; n = -9

Solve by factoring:

x² + 13x + 12 = 0

x²+4x-32=0

• x= -8, 4

• x= 8, -4

• x= -8, -4

Factor:
(x²  + 8x - 20)

• (x + 10)(x - 2)

• (x + 4)(x + 5)

• (x - 10)(x + 2)

• (x - 8)(x + 20)

Solve the equation by factoring.
x² - 35x - 36

• -1, 36

• 1, -36

• -6, 6

• -6

Find the zeros of this quadratic.

• b=4/5, b=3

• b=4, b=-3

• b=1/5, b=3

• b=4/5, b=-3