Question

Sendo f(x)=-2,x²+3.x-7, calcule f(0)-5.f(-1)+f(2)

Answer 1

f(x)= -2x²+3x -7
f(0)= -7
f(-1)= -2-3-7=-12
f(2)= -8+6-7=-9

f(0) - ( 5.f(-1)) +f(2)=
-7 - (5.(-12)) -9 =
-7+60-9=
44