SOLUTION: I can simplify polynomials to the ^2 power but cannot solve (x+y)^3 please help

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Question 91873: I can simplify polynomials to the ^2 power but cannot solve (x+y)^3 please help
Answer by vertciel(183) About Me  (Show Source):
You can put this solution on YOUR website!
Similarly with second-degree terms, you can just foil out (x + y)^3:
= (x + y)(x + y)(x + y)
= x^2 + 2xy + y^2(x + y)
= You try to solve it.
Alternatively, you could use the Binomial Theorem.