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How do you factor #a^3 + b^3 + a + b#?

1 Answer

Jul 9, 2015

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

#=(a+b)(a^2-ab+b^2+1)#

Explanation:

Use the sum of cubes identity:

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

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