Question

seja a funçao f(x)=3x-6x+9, calcule o valor de f(3)+f(-1)-f(0)

Answer 1

f(x) = 3x-6x+9
f(-1) = 3(-1) -6(-1) +9 = 12
f(3) = 3*3 -6*3 +9 =0
f(0) =3*0 - 6*0 + 9 = 9


f(3) + f(-1) - f(0) = 0+12-9 = 3
resposta = 3