Factoring Trinomials Using GCF When a = 1

What is the GCF of the trinomial?
3x² - 9x -120

• 3

• 2

• 6

• 9

What is ALWAYS the first step when factoring?

• Look for the GCF

• Write a, b, and c

• Difference of squares

• Group

Determine Factoring Type x² + 9x - 36

• By GCF

• trinomial when a=1

• by grouping

• trinomial when a is not 1

Factor the trinomial.

• (x+56)(x-1)

• (x-8)(x+7)

• (x-56)(x+1)

• (x+8)(x-7)

Solve for x by factoring.

• -6, -2

• -2, 6

• 2, 6

• -6, 2

Solve for m by factoring.

• A

• B

• C

• D

Factor the trinomial.

• (x-6)(x-2)

• (x-4)(x-3)

• (x-4)(x+3)

• (x+6)(x-2)

Factor the trinomial.

• (x-15)(x+2)

• (x-10)(x-3)

• (x-10)(x+3)

• (x+15)(x-2)

• (x - 7)(x + 4)

• (x - 4)(x - 7)

• (x - 4)(x + 7)

• (x + 4)(x + 7)

• (x + 6)(x + 2)

• (x + 3)(x + 4)

• (x - 4)(x - 3)

• (x - 2)(x - 6)