Question

evaluate xx+yy+3xy when x= -1,y-3

Answer 1

xx + yy + 3xy

x = -1

y = 3

Substitute these into the expression:

(-1)(-1) + 3(3) + 3(-1)(3) =

1 + 9 - 9 = 1

The answer is 1.

I'd love it if you'd mark me brainliest.