SOLUTION: Using Pascal's Triangle, what is the expansion of (a-2b^3)^3 ?
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Question 452713: Using Pascal's Triangle, what is the expansion of (a-2b^3)^3 ?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Using Pascal's Triangle, what is the expansion of (a-2b^3)^3 ?
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3C3(a)^3(-2b^3)^0 + 3C2(a)^2(-2b^3) + 3C1(a)(-2b^3)^2 + 3C0(a)^0(-2b^3)^3
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a^3 + 3(-2)a^2b^3 + 3*4ab^6 + (-8b^9)
------
a^3 - 6a^2b^4 + 12ab^6 - 8b^9
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Cheers,
Stan H.
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