# Solve quadratics by completing the square then fully factorising

## Interactive practice questions

By first completing the square, then factorising using the difference of two squares, or otherwise, solve:

$x^2+24x+63=0$x2+24x+63=0

Easy
Approx 5 minutes

By first completing the square, then factorising using the difference of two squares, or otherwise, solve:

$x^2-14x+33=0$x214x+33=0

By first completing the square, then factorising using the difference of two squares, solve:

$x^2+38x+105=0$x2+38x+105=0

By first completing the square, then factorising using the difference of two squares, solve:

$x^2-40x+144=0$x240x+144=0