If $x (5 - a) = 10 - x^{2}$ and $x = 2$ , find the value of 'a'

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Solution

The correct option is B $2$
Given, $x (5 - a) = 10 - x^{2}$
put $x = 2$
$\Rightarrow 2 (5 - a) = 10 - 2^{2}$
$\Rightarrow 10 - 2 a = 6$
$\Rightarrow 2 a = 4$
$\Rightarrow a = 2$
Option B is correct.

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