Difference of Squares

Front

What is the Difference of Squares formula?

Back

The Difference of Squares formula states that a² - b² = (a + b)(a - b).

Front

Factor 4y² – 9.

Back

(2y + 3)(2y - 3)

Front

Factor 25x² - 81.

Back

(5x + 9)(5x - 9)

Front

Factor 121r² - 64t².

Back

(11r + 8t)(11r - 8t)

Front

Factor a² - 16b².

Back

(a + 4b)(a - 4b)

Front

Factor r² - 9t².

Back

(r + 3t)(r - 3t)

Front

What is a perfect square trinomial?

Back

A perfect square trinomial is an expression of the form a² ± 2ab + b², which factors to (a ± b)².

Front

What is the first step in factoring a difference of squares?

Back

Identify two perfect squares in the expression.

Front

Factor x² - 49.

Back

(x + 7)(x - 7)

Front

Factor 36m² - 64n².

Back

(6m + 8n)(6m - 8n)