Question

If one zero of a quadric polynomial
(kx² + 3x + k) is 2, then the
what is
the value of
k?​

Answer 1

$\Large \mathfrak \pink {\star~~Question:-}$

If one zero of a quadratic polynomial $\sf kx^2+3x+k$ is 2, then the value of k is ?

$\Large \mathfrak \pink {\star ~~Solution :-}$

Substituting x=2 in the equation and solving :-

$\green \leadsto \sf k(2)^2+3(2) + k = 0$

$\green \leadsto \sf 4k+k+6=0$

$\green \leadsto \sf 5k+6=0$

$\green \leadsto \sf k= \dfrac{-6}{5}$

❄️ Therefore, k = $\sf \cfrac{-6}{5}$ for the equation.

Answer 2

Step-by-step explanation:

Question:−

If one zero of a quadratic polynomial \sf kx^2+3x+kkx

2

+3x+k is 2, then the value of k is ?

\begin{gathered} \\ \end{gathered}

\Large \mathfrak \pink {\star ~~Solution :-}⋆ Solution:−

Substituting x=2 in the equation and solving :-

\green \leadsto \sf k(2)^2+3(2) + k = 0⇝k(2)

2

+3(2)+k=0

\green \leadsto \sf 4k+k+6=0⇝4k+k+6=0

\green \leadsto \sf 5k+6=0⇝5k+6=0

\green \leadsto \sf k= \dfrac{-6}{5}⇝k=

5

−6

Therefore, k = \sf \cfrac{-6}{5}

5

−6

for the equation.