Question

Q.1. If one zero of the quadratic polynomial kx² + 3x + k is 2, then the value of k is
(a) _5_ (b) _-5_ (c) _6_ (d) _-6_
6. 6 5 5

Answer 1

is it correct ??
may this will help you

Answer 2

Answer:

$Value \:of \:k = \frac{-6}{5}$

Step-by-step explanation:

Given one zero of the quadratic polynomial kx² + 3x + k is 2,

Substitute x = 2 in the polyomial , we get

k(2)²+3×2+k = 0

=> 4k + 6 + k = 0

$\implies 5k+6 = 0$

$\implies 5k= -6$

$\implies k=\frac{-6}{5}$

Therefore,

$Value \:of \:k = \frac{-6}{5}$

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