Factoring Quadratics A*C Method

How many solutions are there?

• 0

• 1

• 2

• Cannot be determined

What should you do first if solving this equation using the FACTORING method?

x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Solve by factoring: x² = 7x + 18

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

Find the missing value "c" to create a perfect square trinomial:
x² – 8x  + ___ 

• -4

• 16

• 4

• 8

Solve each equation by factoring.

• A

• B

• C

• D

Solve for x by factoring.

• -6, -2

• -2, 6

• 2, 6

• -6, 2

Solve for k by factoring.

• A

• B

• C

• D

• -3, 4
• 3, 4
• -4, -3
• -3

Factor completely.

x² - 14x + 49

• ( x - 7 ) ( x + 7 )

• ( x - 7 ) ²

• ( x + 7 ) ( x - 7 )

• ( x + 7 ) ²

Solve: x²-4x-21=0

• {-7, 3}

• {-3, 7}

• {3, 7}

• {-3,-7}