How do you solve the quadratic equation by completing the square: $x^2+10x-2=0$ ?

Question

1895 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-08-09T18:24:18

$x=-5+-3sqrt(3)$

Tranform the equation to this form
$x^2+10-2=(x+5)^2-27=0$

Then rearrange to make $x$ the subject:
$x+5=+-sqrt(27)=+-3sqrt(3)$

=>

$x=-5+-3sqrt(3)$

How do you solve the quadratic equation by completing the square: x^2+10x-2=0x^2+10x-2=0?