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Natasha2012 [34]

3 years ago

15

Factor the binomial completely. x2−81

1 answer:

Nata [24]3 years ago

4 0

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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Answer:

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Step-by-step explanation:

side of the square base, s = 32 cm

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