Question

2,5(4у-2)-5у(2у-8) найти
значения при у=6

Answer 1

2.5(4*6 - 2) - 5*6(2*6 - 8) = 2.5(24 - 2) - 30(12 - 8) = 2.5*22 - 30*4 = 55 - 120 = -65.