Factor the expression x^4-81?

1 answer:

7 0

$\begin{gathered} x^4-81\text{ (Difference of squares)} \\ \sqrt[]{x^4}=x^2\text{ (Taking the square root)} \\ \sqrt[]{81^{}}=9\text{ (Taking the square root)} \\ (x^2+9)(x^2-9)\text{ (Factoring the difference of squares)} \\ \text{The answer is }(x^2+9)(x^2-9) \end{gathered}$

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General Formulas and Concepts:
Geometry

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Step-by-step explanation:

Step 1: Define

Identify given variables.

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