Question

-3x^2 + 2y^2 + 5xy - 2y + 5x^2 - 3y^2 x = 2 , y = -1

Answer 1

X=2 Y=-1 plug them into the equation
-3(2)^2 + 2(-1)^2 + 5(2)(-1) -2(-1) + 5(2)^2 -3(-1)^2

36+4-10+2+100+9

40-10+2+100+9

30+2+100+9

132+9

141