SOLUTION: I have a problem that says that expanding:
a * a^​3 + 3a^​2​​b + 3ab^​2​ + b^​3 = a​^4 + 3a​^3​​b + 3a​^2&#
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Question 924363: I have a problem that says that expanding:
a * a^3 + 3a^2b + 3ab^2 + b^3 = a^4 + 3a^3b + 3a^2b^2 + ab^3 + 0b^4. It seems like you just multiply, but then somehow you get the 0b^4 at the end. Can anyone explain where the 0b^4 is coming from? Thanks!
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Not sure why that term is added.
Perhaps to balance out the terms? Descending orders of a and increasing orders of b.
Since there is a zero as a coefficient, the equation is technically correct.
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