SOLUTION: My school has started the new core curriculum and this is a homework assignment that I am a little confused with. I have to replace the variables with the numbers but I keep gettin

Algebra ->  Expressions-with-variables -> SOLUTION: My school has started the new core curriculum and this is a homework assignment that I am a little confused with. I have to replace the variables with the numbers but I keep gettin      Log On


   



Question 782432: My school has started the new core curriculum and this is a homework assignment that I am a little confused with. I have to replace the variables with the numbers but I keep getting confused. I think I may be missing a step.
-3x ^2 + 2y ^2 + 5xy + 5x ^2 - 3y ^2
Let x=2, y= -1

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
The instructions are, "replace the variables with the assigned values", so just follow that instruction and evaluate the expression, meaning do the computation to find the value of the expression.

-3x+%5E2+%2B+2y+%5E2+%2B+5xy+%2B+5x+%5E2+-+3y+%5E2+
Let x=2, y= -1

-3%282%29%5E2%2B2%28-1%29%5E2%2B5%282%29%28-1%29%2B5%2A%282%29%5E2-3%28-1%29%5E2
What will this number be when simplified?