Question

simplify the sum.
1.(8u^3+6u^2+8)+(3u^3-6u+8)

simplify the defference.
1. (7w^2-7w-3)-(2w^2+5-2)
2. (8w^2-6w-7)-(3w^2+3w-4)

find the GCF of the terms of the polynomial.
1.18x^3+24x^2

CAND SOMEBODY HELP ME PLAESE.!!!!!??//??/

Answer 1

What is it you do not understand?
For the first three problems you need only combine like terms and for the last one you find the greatest value they have in common.

Answer 2

imm doin work i have never seen until yesterday lol.

Answer 3

I'm sure you understand what "like terms" are, so looking at the problems one at a time, combine all of the like terms, once that is accomplished it will be in its simplified form.

Answer 4

thats it???? okay thanks:)

Answer 5

:) You're welcome.

Answer 6

For the GCF, you want the expression that divides both (which is "in" both).

You can do it in bits, GCF of 18 and 24? (The biggest number that divides both)

Answer 7

thanks.

Answer 8

Come on, tell me what you get...

Answer 9

24???????????????:(

Answer 10

What if you think of it like this:
18x^3 = 2*3*3 x*x*x

Answer 11

immm sorrry! imm very dumb in math.

Answer 12

Well, you can't divide 24 into 18 (you can but the answer wont be an integer).

A systematic way to find the GCF is to factor the numbers like this

24/2 = 12, 12/2 = 6, 6/2 = 3 so 24 = 2*2*2*3

Answer 13

Ah, EspeX says the same....

Answer 14

@estudier has this well in hand. :)

Answer 15

eSpeX

Answer 16

So
24 = 2*2*2*3 and
18 = 2*3*3

To get the GCF you want to "take out" the bits that are in both.

Can you see how?

Answer 17

okay i see what you are saying now.

Answer 18

So for instance there are two 3's in 18 but only one in 24 so you can take out one of them.

Answer 19

okay.

Answer 20

What about the 2's?

Answer 21

r u still there?

Answer 22

I guess not.

Answer 23

is the answer to the problem 6?

Answer 24

lol imm still here i just had to run to the restroom.

Answer 25

That's the correct answer to the GCF of 24 and 18.

Now the next bit, we sort of do it the same.

What's the bit of x^3 and x^2 that is "in" both?

Answer 26

remember x^3 is x*x*x and x^2 = x*x

Answer 27

are you giving me another math problem to work? lol

Answer 28

It's just the same only with x's instead of 2's or 3's

We are still on your original GCF question.

Answer 29

id get it?? write it out for me

Answer 30

Write what ?

Answer 31

what you are saying

Answer 32

I thought that's what I was doing....?

Answer 33

lol seee im totally confused

Answer 34

I think you need to do a bit of studying.

Try here http://www.purplemath.com/modules/lcm_gcf.htm

Thing is, math builds up in layers, if you don't get a layer, you will just have trouble later on.

Answer 35

true true true. thanks soo much for your help.:)

Answer 36

You can try to keep posting your questions to see if someone will just give you the answer but most people will resist answering questions like the first three.

Answer 37

Anyway, good luck.

Answer 38

thanks.