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Functions

Solve the fol...

Question

Solve the following equation:
$\frac{\sqrt{13 - x^{2}}}{x + 1} = 1$

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Solution

$\frac{\sqrt{13 - x^{2}}}{x + 1} = 1 \sqrt{13 - x^{2}} = (x + 1) 13 - x^{2} = x^{2} + 2 x + 1 2 x^{2} + 2 x - 12 = 0 x^{2} + x - 6 = 0 (x + 3) (x - 2) = 0 x = 2, - 3$

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