Question

if -1 is a zero of polynomial 2x^+kx then find the value ok k​

Answer 1

$\huge{\mathcal{\red{\underline{QUESTION:-}}}}$

If -1 is a zero of polynomial 2x² +kx then find the value of k.

​

$\huge{\mathcal{\red{\underline{SOLUTION:-}}}}$

$\bf{\red{Given:-}}$

⇒ -1 is a zero of a polynomial 2x² + kx.

So,

$\mathtt{\red{P(x) = 2x^{2}+kx}}$

$\mathtt{\red{P(-1) = 2(-1)^{2}+k(-1)}}$

$\mathtt{\red{\implies 2-k=0}}$

$\boxed{\mathtt{\red{So,\;k=2}}}$

${\boxed{\boxed{\boxed{\mathtt{\red{Solved}}}}}}$