Question

if the sum of zeroes of the polynomial 5x² - (3+k) x+7 is zero find the value of k​

Answer 1

Given,

• The sum of zeroes of the polynomial 5x² - (3+k) x+7 is → 0

To find :-

• The value of k .

A/Q,

$\rightarrow \: \: \: \: \: \bold{0 = \frac{ - ( -(3 + k))}{5} }$

$\rightarrow \: \: \: \: \: \bold{0 = \frac{ (3 + k)}{5} }$

$\rightarrow \: \: \: \: \: \bold{{ 3 + k} = 0 }$

$\rightarrow \: \: \: \: \: \underbrace\bold{{k} = - 3}$