Question 1202504
<pre>
-y^2-3xy, when x= -4 and y = 2

I got -28

Your answer indicates - 4 - 24. However, when substituted, we get: {{{matrix(2,1, - y^2 - 3xy, - (2)^2 - 3(- 4)(2))}}}
                                                           Finally, - 4 + 24 = 20</pre>