Math, asked by adithyasreekrishna, 9 months ago

find the roots of √(2x^2+9)=9

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Answered by tanu8157

Answer:

hey!!

answer is 6 and -6

hope it helps

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Answered by silentloffer

Answer:

$\huge\purple {Question:}$

$\sqrt{2 {x}^{2} + 9 } = 9$

$\huge\purple {Answer:}$

$\sqrt{2 {x}^{2} + 9 } = 9$

$2 {x}^{2} + 9 = {9}^{2}$

$2 {x}^{2} = 81 - 9$

$2 {x}^{2} = 72$

${x}^{2} = \frac{72}{2}$

${x}^{2} = 36$

$x = \sqrt{36}$

$x = + - 6 \: \: ans..$

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