# Solve quadratics by algebraic manipulation

## Interactive practice questions

Solve the following equation for $x$x:

$x^2=25$x2=25

Write all solutions on the same line, separated by commas.

Easy
Less than a minute
Solve the following equation for $x$x:
$x^2=81$x2=81
If $u^2=d$u2=d, what does the square root property state that $u$u is equal to?
A quadratic equation has solutions $x=\pm5$x=±5. What must the equation be?