Find the product mentally. [(x + 1)(x - 1)]2

[(x+1)(x-1)]2 = (x*x + -x + x + -1)2 = (x^2 - 1)2. This should be the simplest form.

32

step-by-step explanation:

these are your clues: 1. kim ran 18 races2. this was four fewer races than twice thenumber, notice it says twice the number, so you would do the equation 18x2-4; which equals the number 32.thus, 32 is your answer.