Question

If f(x)=5x^3+x^2-5x-1, then f(-1) is ​

Answer 1

Answer:

0

Step-by-step explanation:

obviously -1 is one of the root of that cubic equation

Answer 2

Answer: Put x=-1 in the equation

I.e 5(-1)^3+(-1)^2-5(-1)-1

i.e =-5+1+5-1

i.e=0