Question

If neither a nor bare equal to zero, which answer most accurately describes the product of (a + b)(a - b)?

Answer 1

a² - b²

Explanation:

We can recognize (a + b)(a - b) as a difference of squares.

Step 1: Write expression

(a + b)(a - b)

Step 2: FOIL (Expand)

a² - ab + ab - b²

Step 3: Combine like terms

a² - b²