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Question

Solve :
$x^{2} - 43 x - 90 = 0$

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Solution

$x^{2} - 43 x - 90 = 0$

$\Rightarrow$ $x^{2} - 45 x + 2 x - 90 = 0$

$\Rightarrow$ $x (x - 45) + 2 (x - 45) = 0$

$\Rightarrow$ $(x - 45) (x + 2) = 0$

$∴ x = 45, - 2$

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