Algebra Examples

$k = y - \sqrt{- x^{2} + 21}$ , $y + \sqrt{- x^{2} + 21}$

Step 1

Replace the variable $k$ with $y - \sqrt{- x^{2} + 21}$ in the expression.

$y + \sqrt{- x^{2} + 21}$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$