Question

calcule o valor 2x²- 3y +z /y²-1 sendo x= -2 y=-3 z=-5

Answer 1

Resposta:

2x^2-3y+z/y^2-1

2(-2)^2-3*(-3)+(-5)/(-3)^2-1

2(4) +9-5/9-1

8+4/8= 12/8= 3/2