Which binomial is equivalent to (xy + z)(xy − z)?

x²y² - z²

Step-by-step explanation:

Note that

(xy + z)(xy - z) are the factors of a difference of squares

a² - b² = (a + b)(a - b)

here a = xy and b = z, thus

(xy + z)(xy - z) = (xy)² - z² = x²y² - z²

x = 23.78

step-by-step explanation:

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0