Question

3(x²-y²)-10(x+y)×(x-y). Sabendo que x=-2 e y=-2

Answer 1

3 (x²-y²) - 10 (x+y) × (x-y)

3 ((-2)²-2²) - 10 ((-2)+2) × ((-2)-2)

3 (4-4) - 10 (0) x (-4)

-4