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Functions(p-1) — Maths (commerce) STD 11 Commerce / Arts — Question

Maharashtra BoardEnglish MediumSTD 11 Commerce / ArtsMaths (commerce)Functions(p-1)1 Mark
Question
Find $x$, if $g(x)=0$ where : $g(x)=\frac{18-2 x^2}{7}$
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Answer

$\begin{aligned} & \mathrm{g}(\mathrm{x})=\frac{18-2 x^2}{7} \\ & \mathrm{~g}(\mathrm{x})=0 \\ & \therefore \frac{18-2 x^2}{7}=0 \\ & \therefore 18-2 \mathrm{x}^2=0 \\ & \therefore \mathrm{x}^2=9 \\ & \therefore \mathrm{x}= \pm 3\end{aligned}$

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