108k views
5 votes
If x=2 and y=-3what is the value of 2x²-3xy-2y²

User JSager
by
8.0k points

1 Answer

2 votes

2x^2-3xy-2y^2= 2*2^2-3*2*(-3)-2*(-3)^2 \\ \\ = 2*4+18-2*9= \\ \\ =8+18-18 \\ \\ =\boxed{8}
User Jurgy
by
7.5k points