Question

If ((x²-9)/(x²+3)) = 4/7 , then x is:​

Answer 1

Answer:

Answer...................

Answer 2

$\huge\mathbb\color{red}{answer~~↓~↓~↓}$

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$\huge\bold{To~solve~:}$

$\sf \frac{ {x}^{2} - 9 }{ {x}^{2} + 3 } = \frac{4}{7} \\ \sf By \: cross \: multiplication, \: we \: get : \\ \sf 7( {x}^{2} - 9) = 4( {x}^{2} + 3) \\ \sf 7 {x}^{2} - 63 = 4 {x}^{2} + 12 \\ \sf 7 {x}^{2} - 4 {x}^{2} = 12 + 63 \\ \sf 3 {x}^{2} = 75 \\ \sf {x}^{2} = \frac{75}{3} \\ \sf {x}^{2} = 25 \\ \sf x = \sqrt{25} \\ \sf x = 5$

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$\huge\bold\color{red}{Hope~it~helps..!!}$