Factored Form

MR. BIGSBY'S MATH WORLD

Factored Form

1/24/2016

27 Comments

Easiest way to find the x-intercepts.

27 Comments

Jaden Zimmerman

1/23/2016 09:52:03 pm

very interesting Father

Tapasya Ray

1/24/2016 11:50:35 am

I use FOIL!

F - Multiply the First x First
O - Add the Outer (this goes with O and I)
I - and the Inner (this goes with O and I)
L - Multiply Last x Last

y=(a+b)(x+y)
y=ax+ay+bx+by

Mr. Bigsby

1/27/2016 08:49:34 am

Your equations are correct but the explanation seems a little off.

F- Multiply the First terms ax
O- Multiply the Outer terms ay
I- Multiply the Inner terms bx
L- Multiply the Last terms by

The O and I will get added though because they will be like terms!

Tapasya Ray

1/28/2016 07:03:02 pm

oh yeah.oops

Tapasya Ray

1/27/2016 08:01:00 am

Oops! the comment that i posted before was how to change from factored form to quadratic form. My bad.

Mr. Bigsby

1/27/2016 08:44:35 am

Yes! That is how we will learn to change from factored form to standard form. It is pretty easy with FOIL. The challenge will be changing from standard form TO factored form....

Tapasya Ray

1/28/2016 07:01:57 pm

I think we have to like factor each term.

Ex. y= x^2 + 7x + 12

1\/3
1/\4
Factored form:(x+3)(x+4)
Steps
1. factor the first term by thinking what 2 numbers multiply to equal one.
2. Then figure out what 2 numbers multiply to equal 12.
3. then you have to put an X between each set up of numbers which are horizontally placed. 1 \/ 3
1 /\ 4
4.Then multiply the numbers diagonal from each each other. 1*4=4
1*3=3
5. Then add those 2 products together. 4+3=7
6. If that sum matches the coefficient of x that is in the MIDDLE of the original quadratic equation, then you factored it successfully!
7. So now you take the top 2 numbers at the top of the X and put them in a parenthesis. Make sure the first number in the parenthesis is a coefficient of x.
8. then take the bottom 2 numbers of the X and put them in another parenthesis. Make sure the first number in the parenthesis is a coefficient of x.
9. you are done! (x+3) (x+4)

Hayden

2/1/2016 12:10:30 pm

Angie L.

2/1/2016 12:21:29 pm

Hello!

Mia

2/1/2016 12:45:23 pm

Nice video

Cora C.

2/1/2016 01:00:46 pm

Hi! That game sounds fun!

Avery

2/1/2016 01:16:19 pm

Not sure if my previous comment showed up but hi

Josie

2/1/2016 01:16:40 pm

I watched and it makes a lot more sense to me now, I was confused in class, but this cleared it up.

Ashton Huling

2/1/2016 02:31:27 pm

Hi good vid

Jacob

2/1/2016 02:40:45 pm

Hellow

Brendan Gavin

2/1/2016 03:14:31 pm

Hello coolcvideo helped a lot

Emmett

2/1/2016 03:24:01 pm

YAY! I love Carccasonne! Me and my dad used to play it all the time, but I always get crushed... :( Also plz bring your pokemon deck to strat. club!

Scott Talley

2/1/2016 03:48:45 pm

Hi, neat video. I like the game.

isaiah

2/4/2016 05:20:50 am

this helped alot

Krista

2/2/2016 04:33:13 am

Victoria

2/2/2016 04:44:04 pm

Hey

Autumn

2/3/2016 01:24:22 pm

I was really lost and I didn't watch the video but I just did and now I understand what I was confused about!!

Blake Jacobs

2/3/2016 06:16:56 pm

Good video me bigsby I know this is late and I kinda got this in class but the video helped me understand it just a little bit more

Ray Sutton

2/9/2016 01:07:04 pm

Nice video

Sean

2/10/2016 03:56:38 pm

( ͡° ͜ʖ ͡°)

emma

2/29/2016 02:36:28 pm

I like Tapasya's acronym, foil :)

Natalie

3/2/2016 02:52:18 pm

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