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December 21, 2014

December 21, 2014

Posted by **May** on Sunday, November 1, 2009 at 10:59am.

(x-3)^3+ (3x-2)^3

Can someone explain this to me step by step? thanks

- Math -
**drwls**, Sunday, November 1, 2009 at 11:08am(1) Multiply them out.

(2) Combine terms with the same exponent of x

(3) Try to factor what is left

The last step will probably be the hardest, but you need to get there first.

- Math -
**bobpursley**, Sunday, November 1, 2009 at 11:11amdont you have a formula for the factors of two cubes?

a^3+b^3= (a+b)(a^2-ab+b^2)

Here, a is x-3 and b is 3x-2.

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