SOLUTION: I know this is pretty simple, but I can't seem to come up with the same answer that is given: 'if x=-1 and y=2, what is the value of the expression 2x to the third power-3xy?

SOLUTION: I know this is pretty simple, but I can't seem to come up with the same answer that is given: 'if x=-1 and y=2, what is the value of the expression 2x to the third power-3xy?

Algebra.Com

Question 580103: I know this is pretty simple, but I can't seem to come up with the same answer that is given:
'if x=-1 and y=2, what is the value of the expression 2x to the third power-3xy?

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
if x=-1 and y=2, what is the value of the expression 2x^3 - 3xy
Substitute -1 for x and 2 for y
2(-1^3) - (3*-1*2)
2(-1) - (-6)
-2 + 6 = +4
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