How do you use square roots to solve quadratic equations?

Question

18028 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2014-11-03T17:12:29

Let us solve the following quadratic equation.

#x^2-6x+7=0#

by adding 2,

#x^2-6x+9=2#

#(x-3)^2=2#

by taking the square-root,

#x-3=pm sqrt{2}#

by adding 3,

#x=3 pm sqrt{2}#

I hope that this was helpful.