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Exponential Representation for Irrational Numbers

Solve: x2 - ...

Question

Solve:
$x^{2} - 4 x - 5 = 0$

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Solution

$x^{2} - 4 x - 5 = 0$
$x^{2} - 5 x + x - 5 = 0$
$x (x - 5) + 1 (x - 5) = 0$
$x (x + 1) (x - 5) = 0$
$x = - 1; x = 5$

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