ijimmyjohn ijimmyjohn

15-01-2021
Mathematics

contestada

Factor the binomial completely. x2−81

Factor the binomial completely x281 class=

Respuesta :

jimrgrant1 jimrgrant1

15-01-2021

Answer:

(x - 9)(x + 9)

Step-by-step explanation:

x² - 81 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b), then

x² - 81

= x² - 9²

= (x - 9)(x + 9)

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