Question

Найдите значение вырaжения
15mn-2n+15m^2-2m
при m= 2/15, n= - 2

Answer 1

15*2/15*(-2) - 2*(-2) + 15*(2/15)^2 - 2*2/15 = -4 - (-4) + 4/15 - 4/15 = -4+4 + 4/15 - 4/15 = 0