Question

In first image the question s are there in second image the method is give. And answers should be 0 write answer gain 55 points

Answer 1

put x=1 in question to satisfy the cubic
u will get 1 is root
now divide the whole f (x) by x-1
by divide rule u will get quotient and factor the quotient to get other two roots

u will find total 3 roots

try it u will definitely solve it

hope this helps you

Answer 2

Substitute the roots of the given equation.

After substitution, we should get the answer 0.

This is how roots are found.