Jpecial Products of Binomial Multiplication

Which products result in a difference of squares or a perfect square trinomial? Check all that apply.

(5x + 3) (5x - 3)

(7x + 4) (7x + 4)

(2x + 1) (x + 2)

(4x-6) (x + 8)

(x - 9) (x - 9)

(-3x-6) (-3x+6)

5) Intro

(5x + 3) (5x - 3) (7x + 4) (7x + 4) (x - 9) (x - 9) (-3x-6) (-3x+6)

Step-by-step explanation:

Expressions of the form (a + b) (a + b) will result in a perfect square trinomial, because both binomial factors are identical.

Expressions of the form (a + b) (a - b) will result in a difference of squares.

Match the offered choices to either one of these forms, and they will be included in the answer set.

(5x + 3) (5x - 3) - - difference of squares

(7x + 4) (7x + 4) - - perfect square

(2x + 1) (x + 2) - - nothing special

(4x-6) (x + 8) - - nothing special

(x - 9) (x - 9) - - perfect square

(-3x-6) (-3x+6) - - difference of squares