Question

solve for 13 2nd one​

Answer 1

$\large\underline{\sf{Solution-}}$

$\rm :\longmapsto\:\dfrac{(x - 9)(x - 15)}{(x - 12)} \geqslant 0$

Let

$\rm :\longmapsto\:y = \dfrac{(x - 9)(x - 15)}{(x - 12)} \geqslant 0$

First of all,

$\rm :\longmapsto\:x \: \ne \: 12$

Now,

Breaking points are

$\rm :\longmapsto\:x = 9,12,15$

Now,

Check the intervals

$\rm :\longmapsto\:x \geqslant 15 \: so \: y \geqslant 0$

$\rm :\longmapsto\:12 < x < 15 \: so \: y < 0$

$\rm :\longmapsto\:9 \leqslant x < 12 \: so \: y \: \geqslant 0$

$\rm :\longmapsto\:x< 9 \: so \: y < 0$

So, Solution set is

$\rm :\longmapsto\:x \in \: [9,12) \cup[15, \infty )$

Answer 2

Answer:

Ofc

I'm Inayat Advani

From Delhi

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