Question

X²+2xy+y²,para x = -1 e y =-3

Answer 1

reposta: 16

passo a passo:

$- 1 {}^{2} + 2 \times - 1 \times - 3 + - 3 {}^{2} \\ 1 + 6 + 9 = 16 \\ 1 + 6 + 9 - 16 = 0$