SOLUTION: -y^2-3xy, when x= -4 and y = 2 I got -28

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Question 1202504: -y^2-3xy, when x= -4 and y = 2
I got -28
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
Why are you not sure?

SUBSTITUTE and evaluate!
-%282%29%5E2-3%28-4%292-----------basic arithmetic. Do the computation.

Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!
-y^2-3xy, when x= -4 and y = 2

I got -28

Your answer indicates - 4 - 24. However, when substituted, we get: matrix%282%2C1%2C+-+y%5E2+-+3xy%2C+-+%282%29%5E2+-+3%28-+4%29%282%29%29
                                                           Finally, - 4 + 24 = 20