Question

Verify Whether the following are roots of the polynomial equations indicated against them.

$x^2+4x+3=0;(x=-1,2)$

Answer 1

putting the $x=-1$

$(-1{)}^2+4(-1)+3=0$

Thus $x=1$ is a root of the polynomial

$x=2$

$2^2+4\times 2+3=15$

$\therefore x=2$ is not a root of the polynomial