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Mathematics

Grade10

Easy

Question

Find the solution of quadratic equation $x squared plus 1 equals 1$ using square roots.

$x = 0$
$x = 1$
$x = 2$
$x = 3$

The correct answer is: $x equals 0$

$x squared plus 1 equals 1$
Subtracting ‘1’ from both the sides,
$x squared plus 1 minus 1 equals 1 minus 1$
$x squared equals 0$
Taking square root on both the sides of the equation, we get
$√ left parenthesis x squared right parenthesis equals plus-or-minus √ 0$
$x equals 0$

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