1. ## Solving Quadratic Equations by Factoring

Solve by factoring.

x^2 - 4x = 0

Can that be factored?

2. Hello,

x^2=x*x...

Is there a common factor in the sum ?

3. (x)(x - 4)
x = 0
x = 4

Is that right?

4. Yes :-)

5. You might find this post useful, it explains how to factor quadratics using a very simple method, if you can grasp it, you'll be good for the rest of algebra and up through trig ( if you plan on taking it ). Factoring Quadratics for Idiots

6. Hello,

I've got an even better way...

If m and n are roots of ax²+bx+c, then :

$m+n=-\frac ba$

And

$mn=\frac ca$

Right ?