Question

CORRECT ANSWER = MEDAL + FAN + TESTIMONIAL

Question is attached to my first comment.

Answer 1

@JesseReyna

Answer 2

Hey

Answer 3

Do you know how to factor?

Answer 4

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

Answer 5

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

Answer 6

Do you have answer choices?

Answer 7

Yeah, I'll post them.

Answer 8

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

Answer 9

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

Answer 10

Need to factor

Answer 11

Okay ill do it in word and then post it brb

Answer 12

No, you don't need to factor.

Answer 13

@whovianchick huh that makes no sense

Answer 14

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

Answer 15

No it's not

Answer 16

Factor @seb.cal

Answer 17

oh

Answer 18

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!

Answer 19

i just thought about that

Answer 20

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

Answer 21

IGNORE ME I GOT IT WRONG SUPER SORRY

Answer 22

@Whitemonsterbunny17 This is from a pretest.

Answer 23

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

Answer 24

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

Answer 25

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

Answer 26

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

Answer 27

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

Answer 28

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

Answer 29

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

Answer 30

Now you must factor the numerator

Answer 31

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

Answer 32

that should be 3+z

Answer 33

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

Answer 34

4 times 15 = 60.

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

Answer 35

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

Answer 36

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

Answer 37

Yes exactly!

Answer 38

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

Answer 39

So this is how we do it see we replaced the -16z