Basic Math Examples

Factor r^3-2r^2-4r+8
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.
Step 5
Combine exponents.
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Step 5.1
Raise to the power of .
Step 5.2
Raise to the power of .
Step 5.3
Use the power rule to combine exponents.
Step 5.4
Add and .