Pre-Algebra Examples

Factor by Grouping x^3+2x^2y-4x-8y
Step 1
Factor out the greatest common factor from each group.
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Step 1.1
Group the first two terms and the last two terms.
Step 1.2
Factor out the greatest common factor (GCF) from each group.
Step 2
Factor the polynomial by factoring out the greatest common factor, .
Step 3
Rewrite as .
Step 4
Factor.
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Step 4.1
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Step 4.2
Remove unnecessary parentheses.