Question

3(x*2-y*2)-10(x+y)(x-y),quando x=-2 e y=2
me ajudem ??

Answer 1

3(x²-y²) - 10(x + y)(x - y), p/ x = -2, y = 2
3[(-2)² - (2)²] - 10(-2+2)(-2-2) = 3(0) - 10(0)(-4) = 0