SOLUTION: Will you please show the steps to work this problem? If x=-1 and y=2, what is the value of the expression 2x to the 3rd power -3xy? I hope you can understand my question.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Will you please show the steps to work this problem? If x=-1 and y=2, what is the value of the expression 2x to the 3rd power -3xy? I hope you can understand my question.      Log On


   

Question 873736: Will you please show the steps to work this problem? If x=-1 and y=2, what is the value of the expression 2x to the 3rd power -3xy? I hope you can understand my question.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Plug and chug.
2x%5E3-3xy=2%28-1%29%5E3-3%28-1%29%282%29
2x%5E3-3xy=2%28-1%29%2B3%282%29
2x%5E3-3xy=-2%2B6
2x%5E3-3xy=4