1.

.Find the value of-4x2y2+6xy+ 8x + 12y-1, when x=-2, y =-1.

Answer»

-4x²y²+6xy+18x+12y

x=-2 y=-1

-4(-2)²(-1)²+6*2+18(-2)+12(-1)

-4*4+12-16-12

-16+12-12-16

=-32



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