SOLUTION: if x=-1 and y=2 what is the value of expression 2x^3 - 3xy

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Question 166774: if x=-1 and y=2 what is the value of expression 2x^3 - 3xy
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
2x^3 - 3xy
x=-1, y=2
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= 2*(-1)^3 - 3*(-1)*(2)
= -2 + 6
= 4