SOLUTION: I'm trying to figure out this problem by the sum of cubes (a+b)^3+64 Can anyone explain it in steps? Thank you so much

Question 726626: I'm trying to figure out this problem by the sum of cubes
(a+b)^3+64
Can anyone explain it in steps?
Thank you so much
Found 2 solutions by tanjo3, lwsshak3:
Answer by tanjo3(60) (Show Source): You can put this solution on YOUR website!
I'm not sure what you mean but if you want to expand the equation then:

Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
I'm trying to figure out this problem by the sum of cubes
(a+b)^3+64
***
Formula for sum of cubes: (x+y)^3=(x+y)(x^2-xy+y^2)
For given problem:
64=4^3
(a+b)^3+64 =(a+b)^3+4^3
=((a+b)+4)((a+b)^2-(a+b)*4+4^2)
=(a+b+4)(a^2+2ab+b^2-4a-4b+16)

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