Unit+7+Quadratic+Equations

Unit 7: Quadratic Equations I found this site was a quick way to look at a zero property question []

In a problem that looks like this: (x-12)(x-42)=0, it may seem complicated but its actually simple. At first i thought how cud x-12 and x-42 equal zero but they don't both have to. x could either equal 12 or 42, for example if x=42 then (42-12)(42-42)=(30)(0) which means 0 times 30 which equals 0. That means that as long as one part of the problem like that equals zero it will come out to 0.

I found this site that listed from unit 1 all the way to unit 7, from verbal problems to factoring. Hope it'll help. http://mathisfun.com

This website helped me learn more about quadratic equations when i was having trouble. []

I also went to math is fun dot com and it helped me understand how to take the factoring parts out of the words, if you need some help just give it a look over.

I found that the math is fun website was helpful.

Make sure to set the equation to standard form, a **2** +bx+c=0 (two is an exponent)

Here is an example:

6x-16=(-x **2)** __+x__**__2__** __+x__ __**2**__  x**2** +6x-16=0

This is now in standard form, so you factor and end up with (x+8) (x-2)=0. You solve (x+8=0, x-2=0) to get x=-8 and x=2