Question 782432
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 ^2 + 2y ^2 + 5xy + 5x ^2 - 3y ^2 }}}
Let x=2, y= -1


{{{-3(2)^2+2(-1)^2+5(2)(-1)+5*(2)^2-3(-1)^2}}}
What will this number be when simplified?