Question

-20.m(elevado a 2) + 15.m
m= -10

quanto dá?

Answer 1

$- 20 \times {m}^{2} + 15 \times m \\ - 20 \times ( - 10) + 15 \times ( - 10) \\ 200 + ( - 150) = 200 - 150 = 50$