Question

how do I solve an equation by completing the square???? I'm very lost

Answer 1

Some quadratics are fairly simple to solve because they are of the form "something-with-x squared equals some number", and then you take the square root of both sides


http://www.purplemath.com/modules/sqrquad.htm

Answer 2

watch this https://www.youtube.com/watch?v=bclm1tJB-3g
she explains very well

Answer 3

@Jhannybean !!!

Answer 4

You've got your quadratic \(ax^2 +bx +c = 0\)

Take: \(\left(\frac{b}{2}\right)^2\), and add it on to the existing value of c, this will become oyur new c.

Then you'll have your equation in the form \[\left(x\pm \left(\frac{b}{2}\right)\right)^2 \pm c = 0\]