Question:
If the sum of the zeros of the quadratic polynomial $1(x)=k x^{2}-3 x+5$ is 1 , write the value of $k$.
Solution:
We have to find the value of $k$, if the sum of the zeros of the quadratic polynomial $f(x)=k x^{2}-3 x+5$ is
Given
Sum of the polynomial $=1$
$\frac{-\text { Coefficient of } x}{\text { Coefficient of } x^{2}}=1$
$-\left(\frac{-3}{k}\right)=1$
$3=1 \times k$
$3=k$
Hence, the value of $k$ is 3
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