Find the value of $y$ for which the following expression $y^{2} - 8$ becomes zero.

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$2 \sqrt{2}$

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Solution

The correct option is B
$2 \sqrt{2}$

For the expression to become zero

$\Rightarrow y^{2} - 8 = 0 \Rightarrow y^{2} = 8 \Rightarrow y = \sqrt{8} \Rightarrow y = 2 \sqrt{2} y = 2 \sqrt{2}$
is also called root of the equation.

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