Question

How do you do this algebra? Question in the comments...

Answer 1

What you picked?

Answer 2

1

Answer 3

On the first worksheet the answer would be D

Answer 4

Answer to second worksheet is B

Answer 5

I don't want the answers, I want to know how to do it

Answer 6

So I will

Answer 7

For 1st pic, just make two parentheses.
\[(..............)(.................)\]
ok?

Answer 8

Oh. Well. I'm just using a site for these.

Answer 9

GoodLuck!

Answer 10

k, what goes in the parenthese?

Answer 11

Nice question!
in the 1st and 2nd, type y
\[(y..........)(y............)\]

Answer 12

(y+?) (y-?) is this correct?

Answer 13

in this problem, they give you the possible factors, so we can simplify by using this info:

look at the sign of the last number i.e. -60

if the sign is *negative* then the two number in the factors will have *different signs*

that rule (which you should memorize) helps to eliminate lots of choices


also, look at the sign of the middle number i.e. +4
that means the bigger factor will be positive. (and because the signs are different due to rule 1 up above), the other factor will be minus

Answer 14

Correct!

Answer 15

so what is the next ?
we are looking for two numbers that their sum is 4 and their product is -60
what are these two numbers?

Answer 16

10 & -6

Answer 17

type the parentheses fully now, please!

Answer 18

(y+10) (y-6)

Answer 19

Great!
Then it will be ...# choice?

Answer 20

one more rule

look at the sign of the last number is *positive*
then the two number in the factors will have *same signs*

the other rule for the middle number is the same: the sign of the middle number is the sign of the bigger factor. (and because both have the same sign, it is also the sign of the smaller factor)

Answer 21

That would give me D

Answer 22

Congratulations!
It is D.

Answer 23

I'll try to do question 2 by myself...

Answer 24

The last one is trickier. The key idea is you can factor 4 from each term
in other words, you can write the problem as
4(h^2 + 6h +5)

but we now have to factor h^2+6h+5

Answer 25

I am happy for that.
and I am here for any obstacles.

Answer 26

Let me know when you have finished, and take care of the last one!

Answer 27

okay, I got (x-15) (x-15), which would give me D

Answer 28

Great!
Correct!
and the last one?

Answer 29

phi said
"The last one is trickier. The key idea is you can factor 4 from each term in other words, you can write the problem as 4(h^2 + 6h +5)
but we now have to factor h^2+6h+5"

Answer 30

Time for pray
Salam!
15 min

Answer 31

???

Answer 32

Thank you for the medal!

Answer 33

You're welcome!

Answer 34

I am a bit confused on the last one

Answer 35

which one?

Answer 36

@sand-lock53

Answer 37

http://assets.openstudy.com/updates/attachments/57ffa800e4b0d88e39fbe959-sand-lock53-1476372538881-okmathreallysucks3.png

Answer 38

any idea?

Answer 39

Where are you stuck?

Answer 40

ha?

Answer 41

I don't recall learning it in the lesson, but I think the answer is C

Answer 42

Let me explain, please
There are two ways to proceed.
1. take 4 as a common factor from the three terms
or
2.resolve the three terms directly

I prefer 1st one

Answer 43

Would the numbers be 5 & 6?

Answer 44

\[4h^2+24h+20=4(h^2+6h+5)=4(h+1)(h+5)\]
try this , test it, and let me know when you are pretty sure

Answer 45

5 and 1

Answer 46

got it?

Answer 47

yes

Answer 48

So, i have to divide all three numbers by 4?

Answer 49

@3mar

Answer 50

Yes you have, then you can easily factor them!

Answer 51

Sorry, I was not online!