Make x the subject of in the following expression

$\frac{x^4 - 4}{x^2 -2} \ = K$

Answers

$\frac{(x^2)2 - 4}{x^2 - 2} \ = K$

$\frac{(x^2 -2)(x + 2)}{x^2 - 2} \ = K$

x=

$x^2 + 2 \ = K$

$\pm \sqrt{K - 2}$

raphael answered the question on January 16, 2017 at 12:38

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