6-5 Adding and Subtracting Algebraic Fractions - Mr nystrom

[pigmunk23]

"its booty time, don't you forget it' :D

wish my maths teacher was like this :)

[RajayJB]

he makes math fun :)

[MrNystrom]

think about this...  a is the opposite of -a, and -a is the opposite of a...

The opposite of a number pretty much switches its sign, the opposite of an expression switches all of the signs... the opposite of a-b+c-d is -a+b-c+d. The opposite of a-b then, is -a+b. I just switched the sign. -(a-b)=-a+b. If you now rearrange the -a+b you can write it as b-a, so you can see the opposite of a-b is b-a. (the opposite of 5-3 is 3-5)

[im4naruto]

What do you mean a -b is the oposite of -a + b? Can you link me to the video please!:)

[grotesqueMCR]

wtf!!!

ahhahahh i'm learning at the same time laughing at this guys way of teaching ahhaha!!

ty dat was a help!!

^_^

[TheCaptainjuicy]

1,000,000 times better than my teacher

Hes a vietnamese immigrant ( no offense )

But he has an accent thats hard to understand

And the study guide and review sheet we were supposed to study with was all of a sudden due earlier than he said. Hes also a bit strict and just storms real fast through the lesson

[playram1]

You make Algebra I look like Chuck E' Cheese. Thank you, Mr. Nystrom.

[Smileymarsian]

booty is the best word ever adding and subtrActing=BOOTY!!!

[jvincents]

"Booty" is better than saying it "Denominator."

Its more catchy.

[juanlmesl]

keep it up just take your time do not rush

[gherz0nenoah]

in 6:48 why "ab(a-b)" is the LCD where in if "a" multiplied into the denominator of the first addend (in mathematical statement) -> a [b(a-b)] = ab(a² -ab), it will be then equal to "ab(a² -ab)" where in the product of the denominator is ab(a² -ab)≠ ab(a-b) as the "LCD" as he has given, ... please correct me if im wrong. i dont know why..

[niggageeable]

is this jack black?

[fmaaddict94]

on the last one with the polygon you forgot to take out a 2 making it (6b+5a)/3

[anotherreasonwhy]

LOOOL. BOOOTAY

man i will never forget this

i have never laughed while learning math so much. love this. thank you :)

[NBAfutureishere9]

Thanks you really helped a lot cause I for some algebra

[cOoKIePRodUxShUnz]

thanks for solving one of problems...

soo smart..=]]

muchos gracias senior

[TBN4evr100]

I am in grade 9 and it's a lot more complicated... I need to know how to add and subtract fractions when the denominators are like: x^2 + 4ab - 5 plus a fraction with the denominator x^2 - 4ab + 5. The signs in the denominator change and that's what I have trouble with! Please make a video like that!

[MrNystrom]

You are dealing with Rational Expressions.

Look for my videos on those....

good luck

[GreenCures]

on problem #7 i'm still screwy for some reason...

finding the common denominator for:

b(a-b) AND a(b-a) didn't get it

if I multiply them together, will that give me the LCD?

[struddel765]

you have the

Algebra 1 Structure and Method: Book 1

by McDougal Littell

[MrNystrom]

yes.

that is the text that I used when making these videos.

Have a nice day.

[conquestvideos]

So thats why the examples you give are the same ones they give in my book!

[pauliet98]

on #7 he forgot the difference of squares!

[MrNystrom]

Great observation.

should be (a+b)/ab

keep watching.........

[xbox4liph]

yea if you forget the difference of squares

your problem is going to be messed up

[GotenSSJ1]

Thank you for uploading these videos I'm struggling with algebraic fractions at the moment and these video's have really helped =).

[inkibert]

thank you for sharing it's so easy to forget this stuff when you have not done it in twenty years.

[xXDeAragonXx]

All good but u lost me at 5.25

[nova8611]

you make this intresting thanks you would be a great teacher

[animefreak4evaX]

@nova8611 i'm pretty sire he is a teacher beause we use the same math book..

[LifeLongRacer]

dude you should become a math teacher....you would be awesome