Question

Find the value of the polynomial $5x+4x^2+3$ at $x=-1$

Answer 1

A] Given $5x+4x^2+3$

at $x=-1$

$\Rightarrow$$5(-1)+4(-1{)}^2+3$

$\Rightarrow$ $-5+4+3=2$

$\therefore$ value is $2$