Question

if f(x)= x^3-5x^2-4x+20 show that f(0)=-2f(3)​

Answer 1

f(0) = 0-0+-0+20 =20

f(3) = 27-45 -12=. -30

2(-30 )= -60

Answer 2

Answer:

f(0)=0-0-0+20=

f(3)= 27-45-12+20=-10

-2(3)=10