## tadhanala Group Title -4√x+9 (end of sqrt) = 20 one year ago one year ago

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$-4\sqrt{x+9} = 20$

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is this the question??

Yes

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ok so squaring bothsides we get 16(x+9) = 400 x+9 = 400/16 x+9 = 25 x = 25 - 9 x = 16 --------------> required solution