2. Polynomials
medium

નીચેના આપેલ બહુપદી માં જો  $x -1$ એ $p(x)$ નો એક અવયવ હોય તો $k$ ની કિંમત શોધો : $p(x)=k x^{2}-3 x+k$

A

$\frac{2}{3}$

B

$-\frac{3}{2}$

C

$\frac{3}{2}$

D

$-\frac{2}{3}$

Solution

$x-1$ એ $p(x)$ નો અવયવ છે.                   $\therefore $ $p(1)=0$ થાય.

$p(x) =k x^{2}-3 x+k$

$\therefore p(1) =k(1)^{2}-3(1)+k$

$\therefore 0 =k-3+k$

$\therefore 0 =2 k-3$

$\therefore 3=2 k$

$\therefore \frac{3}{2} =k$

$\therefore k=\frac{3}{2}$

Standard 9
Mathematics

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