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Range of Quadratic Expression

Decide whethe...

Question

Decide whether $(y - 2) (y + 2) = 0$ is a quadratic equation.

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Solution

The given equation is
$(y - 2) (y + 2) = 0$
i.e., $y^{2} - 2^{2} = 0$
$y^{2} - 4 = 0$
Here, degree is $2$
$∴$ The given equation is a quadratic equation

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