Question

Can you believe?

Answer 1

Doing my bros college work:D @ganeshie8

Answer 2

@ash2326

Answer 3

@YanaSidlinskiy do you need help solving the problem?

Answer 4

this is your bro's homework ? you're helping him is it

Answer 5

No. I was just showing you what I'm doing right now:D I figured it out though like after 30 minutes:D

Answer 6

oh cool :D

Answer 7

Shouldn't he do the homework? ;)

Answer 8

Yea. He's just being lazy. Everytime he doesn't wanna do work, he's like...yana, go do it:D Yea. But....I'm that niceXD:D

Answer 9

Pretty much like cheating:). But...that shows how nice I am:D

Answer 10

factoring by grouping is fun... we cannot do it always though ! most polynomials are not that nice... however the ones we deal with in homework are cooked up to be factorable and so they are always nice !!

Answer 11

Yep! I agree.

Answer 12

try to factor `x^3 + x + 1` in your free time :)

Answer 13

Umm..Not those kind though. I've never been taught how to factor. But I just go by the examples. Lemme see if I can get this one though.

Answer 14

just a headsup -
its very hard to factor... regular methods wont work :
http://www.wolframalpha.com/input/?i=factor+x^3+%2B+x+%2B+1&dataset=

Answer 15

XD. I knew something was wrong. Couldn't do anything. Idk.

Answer 16

it is supposed to be very hard haha! its just a bad example to remind us that not everything is factorable by grouping and there are other cool methods waiting in higher math :)

Answer 17

Lol. I haven't gotten there yetXD. That's not for meh. Lol.

Answer 18

Now I really do have a question:)

Answer 19

Sorry. That was the wrong oneXD
\[2x ^{2}-10xy-7x+35y\]

Answer 20

How would I factor \(\huge{\uparrow}\) out?

Answer 21

group first two terms,
group last two terms

Answer 22

\[\large 2x^2-10xy-7x+35y\]

\[\large (2x^2-10xy) + (-7x+35y)\]

Answer 23

factor out the GCF from first group

Answer 24

whats the GCF of first group ? (first two terms)

Answer 25

Not sure. I worked it out several times. But I have a final answer as:
(x-5y)(2x-7)

Answer 26

thhats right! but you need to know GCF to work this problem step by step

Answer 27

Ok. Want me to show my steps?

Answer 28

yes

Answer 29

2x^2-10xy=2x(x-5y)
-7x+35=-7(x-5y)=2x^2-10xy-7x+35y=2x(x-5y)-7(x-5y)
2x(x-5y)-7(x-5y)=(x-5y)(2x-7)
Sorry if it doesn't make sense.

Answer 30

it makes very good sense :) good job !
you're factoring out GCF without knowing that you're doing it...

Answer 31

your first line : 2x^2-10xy= `2x`(x-5y)

`2x` is the GCF of first group

Answer 32

Hahaha!!:D Ok. I *think* i got the hang of it<3

Answer 33

I can see you're very good in math ;)
also you should teach ur bro and let him do his work ! don't *spoil* his discovery of concepts by doing all his work (just saying...)

Answer 34

Hahhaha!!:D I'm not that good in math to tell you the truth. I still have a long way to go. Lol. I won't spoil it. XD.