CORRECT ANSWER = MEDAL + FAN + TESTIMONIAL
Question is attached to my first comment.

- seb.cal

CORRECT ANSWER = MEDAL + FAN + TESTIMONIAL
Question is attached to my first comment.

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- seb.cal

##### 1 Attachment

- seb.cal

@JesseReyna

- JesseReyna

Hey

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## More answers

- JesseReyna

Do you know how to factor?

- seb.cal

Yeah, but I SUCK @ it... I always get it wrong, seriously.

- whovianchick

4z^2-16z+5
------------ the two z^2's cancel out
2z^2+z-15
4-16z+5
-------- the two z's cancel out
2+z-15
4-16+5
------- combine like terms
2-15
-7 7
--- = ----
-13 13

- whovianchick

Do you have answer choices?

- seb.cal

Yeah, I'll post them.

- Insertnamehere352

- seb.cal

##### 1 Attachment

- JesseReyna

You can't cancel out like that if there are adding and subtracting terms

- JesseReyna

Need to factor

- JesseReyna

Okay ill do it in word and then post it brb

- whovianchick

No, you don't need to factor.

- Astrophysics

@whovianchick huh that makes no sense

- whovianchick

x^2 x x^2+x
---- +---- is the same thing as --------
x^2 x x^2+x

- Astrophysics

No it's not

- Astrophysics

Factor @seb.cal

- whovianchick

oh

- Whitemonsterbunny17

Just a friendly reminder that direct answers are against the Anti-Cheating Policy. Even if you explain the answer afterward.
Have a wonderful day, everyone!

- whovianchick

i just thought about that

- seb.cal

I figured I had to b/c the math that she did didn't match up with the answers.

- whovianchick

IGNORE ME I GOT IT WRONG SUPER SORRY

- Astrophysics

|dw:1449865202144:dw|

- seb.cal

@Whitemonsterbunny17 This is from a pretest.

- Astrophysics

Ok first lets factor the denominator, do you know how to do that?

- Astrophysics

Doesn't matter if it's a pretest, why would you want answers to just a pretest then...pretests are used to help you learn

- seb.cal

By multiplying the 1st and 3rd terms, right? Then seeing if the factors match up to equal 1?

- Astrophysics

Mhm, well there's a 2 as a coefficient so it's a bit trickier, we want the product of 2 and -15 then figure out the factors -30

- Astrophysics

\[2z^2+z-15 \implies 3(2z-5)+z(2z-5)\]

- seb.cal

Factors of -30:
-30 and 1
5 and -6 (or reversed).

- seb.cal

Oh, I see what you did there.. Okay, then what I do with that?

- Astrophysics

Now you must factor the numerator

- Astrophysics

Since we have \[\frac{ 4z^2-16z++15 }{ (3-z)(2z-5) }\]

- Astrophysics

that should be 3+z

- Astrophysics

So find the product of 4 and 15, then ask which two numbers add up to -16 and multiply to give that product

- seb.cal

4 times 15 = 60.
Factors of 60 =
60 and 1
6 and 10
5 and 12
3 and 20
4 and 15

- seb.cal

but, I didn't do the negative side... So the answer would be -6 and -10?

- Astrophysics

Right so our product is 60, now note the middle number sorry I wasn't clear about it earlier, we want two numbers to add up to -16 and multiply to give 60

- Astrophysics

Yes exactly!

- seb.cal

Woohoo! Yes!! alright, tehn since we have the denominator down... How exactly would I "plug in" -6 and -10 into the numerator?

- Astrophysics

So this is how we do it |dw:1449865798827:dw| see we replaced the -16z

- Astrophysics

Make sense?

- JesseReyna

here is the answer

##### 1 Attachment

- Astrophysics

Now you can just factor out (2z-3) \[(2z-5)(2z-3)\] to get this

- JesseReyna

I showed all of the work on the paper

- seb.cal

Yes! Okay! I was just about to write the numerator but u posted it, so cool! :P

- seb.cal

Thank you thank you thank you SO much for all of this :) @Astrophysics and @JesseReyna

- JesseReyna

np

- Astrophysics

Ah I see you gave steps thought it was just direct answers @JesseReyna haha

- JesseReyna

No i dont do that direct answers is for yahoo

- Astrophysics

Ok, so everything makes sense now seb?

- seb.cal

Yeah, 100%! :D

- seb.cal

tysm :)

- Astrophysics

Cool, now you can just cancel oout common terms and get the answer

- JesseReyna

Tag me for any more help seb!

- seb.cal

Awesome Sauce c:

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