Factor x^4-4x^3-64x+256

Math
Factor out the greatest common factor from each group.
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Group the first two terms and the last two terms.
Factor out the greatest common factor (GCF) from each group.
Factor the polynomial by factoring out the greatest common factor, .
Rewrite as .
Since both terms are perfect cubes, factor using the difference of cubes formula, where and .
Factor.
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Simplify.
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Move to the left of .
Raise to the power of .
Remove unnecessary parentheses.
Combine exponents.
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Raise to the power of .
Raise to the power of .
Use the power rule to combine exponents.
Add and .
Factor x^4-4x^3-64x+256
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