Algebra Examples

Factor 81x^4-1
Step 1
Rewrite as .
Step 2
Rewrite as .
Step 3
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Step 4
Simplify.
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Step 4.1
Rewrite as .
Step 4.2
Rewrite as .
Step 4.3
Factor.
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Step 4.3.1
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Step 4.3.2
Remove unnecessary parentheses.