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Mathematics 20 Online
OpenStudy (anonymous):

fan and medal for help with a few questions!! thanks :)

OpenStudy (anonymous):

im going to shove my feces up your anus

OpenStudy (anonymous):

:O

ganeshie8 (ganeshie8):

question ?

OpenStudy (anonymous):

Factor x2 + 5x + 6

OpenStudy (anonymous):

*Factor x^2 + 5x + 6

ganeshie8 (ganeshie8):

find two numbers such that : they add up to 5 they multiply to 6

ganeshie8 (ganeshie8):

lets try 3 and 2 : 3 + 2 = 5 3*2 = 6 they satisfy ! so it factors to : (x + 3)(x + 2)

ganeshie8 (ganeshie8):

if that makes any sense.. .

OpenStudy (anonymous):

Yeah that makes sense!

ganeshie8 (ganeshie8):

good :)

OpenStudy (anonymous):

but I don't have that as an option.

OpenStudy (anonymous):

oh never mind! SORRY it was just (x + 2)(x + 3)

OpenStudy (anonymous):

Factor x^2 + 8x + 12

OpenStudy (anonymous):

wtf

OpenStudy (anonymous):

I know :I

OpenStudy (triciaal):

same process what are the factors of 12 that add up to 8

OpenStudy (anonymous):

well 4*3=12 but 4+4=8

ganeshie8 (ganeshie8):

try 6 and 2

OpenStudy (anonymous):

ohh... wow. Okay.

OpenStudy (anonymous):

So 6*2=12 and 6+2=8

ganeshie8 (ganeshie8):

yes, so the factored form is ?

OpenStudy (anonymous):

(x+6)(x+2)

ganeshie8 (ganeshie8):

\(\large \color{red}{\checkmark}\)

OpenStudy (anonymous):

Yay! I have a couple more?

OpenStudy (anonymous):

Factor x^2 + 8x – 20

ganeshie8 (ganeshie8):

sure :)

ganeshie8 (ganeshie8):

find two numbers such that : they add to 8 they multiply to -20

OpenStudy (anonymous):

where did you get the -20 ?

ganeshie8 (ganeshie8):

from the given quadratic oly -20 is the constant term

OpenStudy (anonymous):

okay -2 and 10?

OpenStudy (anonymous):

could you tell that took a while for me?

ganeshie8 (ganeshie8):

yess !

ganeshie8 (ganeshie8):

those are ur magic numbers :)

OpenStudy (anonymous):

so (x – 2)(x + 10)

ganeshie8 (ganeshie8):

\(\large \color{red}{\checkmark}\)

OpenStudy (anonymous):

cool! :) I have two more! Factor x^2 – 5x + 24

ganeshie8 (ganeshie8):

find two numbers such that : sum = -5 product = 24

ganeshie8 (ganeshie8):

wait a sec, there seems to be a typo in the sign in given quadratic... can u check it again ?

ganeshie8 (ganeshie8):

it should be : \(\large x^2 – 5x \color{red}{-} 24\)

OpenStudy (anonymous):

Well that's what it said on my page.

ganeshie8 (ganeshie8):

wat are ur options ?

OpenStudy (anonymous):

A. (x – 12)(x – 2) B. (x – 3)(x – 8) C. (x – 4)(x – 6) D. prime

ganeshie8 (ganeshie8):

good :) we cannot factor the given quadratic. tick \(prime\)

OpenStudy (anonymous):

okay cool!

OpenStudy (anonymous):

Last one! Factor x^2 – 21x – 100

OpenStudy (triciaal):

hint factors of 100 25,4

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