Find rational roots of the polynomial `f(x)=2x^3+x^2-7x-6`
Clearly f(x) is a cubic polynomial with integer coefficient.

Explanation

Clearly f(x) is a cubic polynomial with integer coefficient.
Hence, the possible rational roots of f(x).
we observe that ,`f(-1)=2(-1)^3+(-1)^2-7(-1)-6=0`
`f(2)=2(2)^3+(2)^2-7(2)-6=0`
`f(-3/2)=2(-3/2)^3+(-3/2)^2-7(-3/2)-6=0`