Question

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

Answer 1

Finding the vaue of given polynomial at $x=1$

By inserting the value of $x$as $1$in the given polynomial, we get ,

$\Rightarrow x^4-x^3+x^2-x+1$

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

$\Rightarrow 1-1+1-1+1$

$\Rightarrow 1$

Hence, the value of the given polynomial will be $1$.