Algebra Examples

Factor 81x^4-16y^4
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
Remove parentheses.
Step 4.2
Rewrite as .
Step 4.3
Rewrite as .
Step 4.4
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Step 4.5
Factor.
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Step 4.5.1
Multiply by .
Step 4.5.2
Remove unnecessary parentheses.