11-05-2019
Mathematics

contestada

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

Respuesta :

jimrgrant1 jimrgrant1

11-05-2019

Answer:

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

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