Question

Question 10 of 40

Answer 1

Answer:

D) (x + 9)(x-9)

Step-by-step explanation:

$x^2-81$

Let's Rewrite 81 as → 9^2

$x^2-9^2$

Now, apply difference two squares formula

$\left(x+9\right)\left(x-9\right)$

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