Solve by Factoring

What is the next step in solving

(x + 2)(x - 3) = 0 ?

• Plug in zero for y

• Solve for x

• Write the quadratic in factored form

• Set each factor equal to zero

Tags

CCSS.HSA-REI.B.4B

 $\left(x-4\right)\left(x-5\right)=0$  

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

Tags

CCSS.HSA-REI.B.4B

What is the next step in solving 2x² - 5x - 12 = 0 ?

• Plug in y=0

• Rewrite the quadratic in factored form

• Set each factor equal to zero

• Solve for x

Tags

CCSS.HSA-REI.B.4B

 $\left(2x-1\right)\left(x+4\right)=0$  

• x= 1/2, x=-4

• x= 1/2, x=4

• x=2,  x=-4

• x=-2, x=4

Tags

CCSS.HSA-REI.B.4B

 $\left(3x-2\right)\left(5x+1\right)=0$  

Solve:

• 5/2, -1/3

• 1/5, -2/3

• 1/3, -5/2

• 2/3, -1/5

Tags

CCSS.HSA-REI.B.4B

 $8x\left(x-5\right)=0$  

• x=8, x=5

• x=0, x=-5

• x=0, x=5

• x=8, x=-5

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: x² + 3x - 18 = 0

• x = -3 and x = 6

• x = 3 and x = -6

• x = -9 and x = 2

• x = 9 and x = -2

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:  2x²+ 7x + 6 = 0

• x= 3/2 and x = 2
• x = -3/2 and x = -2
• x = 6 and x = 7
• x = -6 and x = -7

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: (hint: use GCF method)

 $x^2+7x=0$  

• x=7,  x=1

• x=-7, x=0

• x=-7

• x=7, x=0

Tags

CCSS.HSA-REI.B.4B