Find the Domain x = square root of y

$x = \sqrt{y}$

Rewrite the equation as $\sqrt{y} = x$ .

$\sqrt{y} = x$

To remove the radical on the left side of the equation, square both sides of the equation.

${\sqrt{y}}^{2} = x^{2}$

Simplify each side of the equation.

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Multiply the exponents in ${(y^{\frac{1}{2}})}^{2}$ .

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Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$y^{\frac{1}{2} \cdot 2} = x^{2}$

Cancel the common factor of $2$ .

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Cancel the common factor.

$y^{\frac{1}{2} \cdot 2} = x^{2}$

Rewrite the expression.

$y^{1} = x^{2}$

Simplify.

$y = x^{2}$

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

$(- \infty, \infty)$

Set-Builder Notation:

${x | x \in ℝ}$

Find the Domain x = square root of y

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