# what is 8x-32 factored completely?

• Sep 15th 2008, 07:08 PM
yellowjello
what is 8x-32 factored completely?
what is 8x-32 factored completely?
• Sep 15th 2008, 07:09 PM
Jhevon
Quote:

Originally Posted by yellowjello
what is 8x-32 factored completely?

8(x - 4)

8 was the common term. just pull it out. not much else to do
• Sep 15th 2008, 07:42 PM
Jhevon
Quote:

Originally Posted by yellowjello
I tried posting other questions in a new thread but no one was answering me....sorry.

*gasp* you mean you double posted?? :eek:

that was very naughty of you, yellow! that's even more against the rules than not posting new questions in a new thread

Quote:

you multiply the bottom so do you multiply the top?
you would get 5/24 is that right? or do i have to do more?
ok, quick review. multiplying fractions

$\frac ab \times \frac cd = \frac {ac}{bd}$

please, NEVER make the mistake and think $\frac ab + \frac cd = \frac {a + c}{b + d}$. that is wrong
• Sep 15th 2008, 07:49 PM
yellowjello
so I'm right, the answer is 5/24
Correct?
• Sep 15th 2008, 07:50 PM
Jhevon
Quote:

Originally Posted by yellowjello
so I'm right, the answer is 5/24
Correct?

did you look at the rule i posted?

$\frac 56 \times \frac 44 = \frac {5(4)}{6(4)} = \frac {20}{24}$
• Sep 15th 2008, 08:11 PM
Jhevon
Quote:

Originally Posted by yellowjello
okay yeah that makes no sense looking at it now. but i had to simplify 20/24 and i got 5/6 i don't understand what the answer is supposed to be.

ok, why go through all the trouble of turning 5/6 into 20/24 only to simplify it to 5/6 again? aren't you just going in circles? there is a reason for writing it as 20/24, we don't want to go back to 5/6. don't forget your objective. you want 5/6 + 1/4, you are not dealing with 5/6 alone, you are adding something to it. if you make the manipulations i told you, you end up with

5/6 + 1/4 = 20/24 + 6/24 = ........?
• Sep 15th 2008, 08:27 PM
yellowjello
26/24 or 13/12 right?
• Sep 15th 2008, 08:29 PM
Jhevon
Quote:

Originally Posted by yellowjello
26/24 or 13/12 right?

yes

now, look over the problem, and make sure you understand all the steps that were taken. if not, ask
• Sep 15th 2008, 08:33 PM
yellowjello
so you cross multiply 5*4 & 6*1 and multiply the denominators 24 underneath each of those numerators to get 20/24 + 6/24 then add them to get 26/24 and simplify to get 13/12
• Sep 15th 2008, 08:40 PM
Jhevon
Quote:

Originally Posted by yellowjello
so you cross multiply 5*4 & 6*1 and multiply the denominators 24 underneath each of those numerators to get 20/24 + 6/24 then add them to get 26/24 and simplify to get 13/12

this is not "cross multiplying", it's just regular multiplying

ok, you seem to get it

so, what's 7/5 - 3/4 = ?
• Sep 15th 2008, 08:47 PM
yellowjello
okay

3/10 right?
• Sep 15th 2008, 08:52 PM
Jhevon
Quote:

Originally Posted by yellowjello
okay

3/10 right?

no

• Sep 16th 2008, 10:15 AM
masters
Quote:

Originally Posted by Jhevon

what if i told you the LCD (no, it's not a drug) was 24, would that help?

And what if I told you the LCD was 12?
• Sep 16th 2008, 06:33 PM
Jhevon
Quote:

Originally Posted by masters
And what if I told you the LCD was 12?

i'd say: "that's mighty sharp of you, masters! the student has become the teacher....i'm so proud (Crying)"

i'd also say, my bad :D. i was thinking of a shortcut and not finding the LCD