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lexieanderson01 lexieanderson01
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9 years ago
I need help factoring cubes. How would I factor k^6-125?
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Valued Member
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9 years ago
We have: (a3-b3)=(a-b)(a2+ab+b2)

In your case: a3=k6=(k2)3 and b3=125=53
So, a=k2 and b=5

You will apply this: a3-b3=(a-b)(a2+ab+b2) but instead of a you will put k2 and instead of b you will put 5.

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