Question

Plz explain and answer this quaratic equation ​

Answer 1

Step-by-step explanation:

${x}^{2} - \frac{1}{ {x}^{2} } = 5 \\ \frac{ {x}^{4} - 1 }{ {x}^{2} } = 5 \\ {x}^{4} - 1 = 5 {x}^{2} \\ {x}^{4} - 5 {x}^{2} - 1 = 0$

Answer 2

$\huge\star\pink{solution}$

$= > x {}^{2} - \frac{1}{x {}^{2} } = 5 \\ \\ = > x {}^{2} = 5 + \frac{1}{x {}^{2} } \\ \\ = > x {}^{2} = \frac{5x {}^{2} + 1 }{x {}^{2} } \\ \\ = > x {}^{4} - 5x {}^{2} - 1 = 0$

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I hope it helps you