Question

Please help!!! Will fan and medal!!!

Question attached in comments.

Answer 1

@satellite73

Answer 2

IDENTICAL to the one we just did earlier and yesterday
by now i bet you can do it

Answer 3

subtract in the top
then factor out the 8 in the numerator
the denominator is another perfect square, factor and cancel

Answer 4

Ohh yea we divide 32 by 8

Answer 5

So for the top it'd be 4(u-8)?

Answer 6

yes

Answer 7

and take a wild guess as to how the denominator factors ...

Answer 8

oh woops no not \(4(u-8)\) but rather \(8(u-4)\)

Answer 9

the common factor of \(8u\) and \(32\) is \(8\)

Answer 10

so, as the math teachers say, you "factor it out"\[8u-32=8(u-4)\]

Answer 11

now just like the last one the denominator is a perfect square, factor and cancel

Answer 12

you can probably at this point guess what the answer is

Answer 13

6u+16 is the denominator

Answer 14

I know it's 8/u-4 I'm tring to see how 16 is eliminated though

Answer 15

because just like last time it factors \[u^2-8u+16=(u-4)(u-4)\] and the common factor of \(u-4\) cancels top and bottom

Answer 16

you gotta get this factoring thing together because they are using it alot

Answer 17

I think I see... And I'm trying I'm sorry :( I'm really trying it's just hard for me :(

Answer 18

hey don't fret, it is not like you are born knowing it, you are learning it

Answer 19

Wait 8/4-u was wrong D:

Answer 20

grr that is because it is \[\frac{8}{u-4}\]

Answer 21

not \[\frac{8}{4-u}\] which is different

Answer 22

Dang it! See simple things like that get me too :'(

Answer 23

ah you'll get it