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factor each polynomial completely.27x^3-y^3

Answered by:Scott
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factor each polynomial completely.27x^3-y^3

Submitted: 1548 days and 8 hours ago.

Category: General

Value: $9

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Expert: Scott replied1548 days and 8 hours ago.

Hi there!

This is a "difference of cubes".

If you have a^3 - b^3, you factor it as:

(a - b)(a^2 + ab + b^2)

In this problem, a = 3x, b = y, so:

(3x-y)(9x^2 + 3xy + y^2)

Let me know if you have any questions,

Scott

Expert Type	MIT Graduate
Category:	General
Pos. Feedback:	100.0 %
Accepts:	213
Answered:	3/23/2009

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