Question

If x-1/x = 13 find x^2-1/x^2

Answer 1

Answer:

Here is your answer mate

Step-by-step explanation:

$x ^{2} - \frac{1}{x {}^{2} } \\ \frac{x {}^{2} }{1} - \frac{1}{x {}^{2} } \\ \frac{x^{4} - 1 }{x {}^{2} } \\ therefore = x {}^{2} - \frac{1}{x {}^{2} } \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{x ^{4} - 1 }{x {}^{2} }$

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