Question

Дана функция y(x)= -3x^2 - 4x +5. Найдите y(3-x)

Answer 1

у(3-х)=-3(3-х)^2 -4(3-х) +5= -3(9-6х+х^2) -12+4х+5= -27+18х-3х^2 -12+4х+5=22х-34-3х^2