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Mathematics 14 Online
OpenStudy (anonymous):

2x^2+15x-38

TheSmartOne (thesmartone):

And what about that...?

OpenStudy (anonymous):

Unsimplify

pooja195 (pooja195):

Factor?

OpenStudy (anonymous):

Yeah

pooja195 (pooja195):

|dw:1435793121786:dw|

pooja195 (pooja195):

\[\huge~\rm~2x^2+15x-38\] x=2 b=15 c=-38 \[\huge~\rm~2\times-38=?\]

OpenStudy (anonymous):

-76

OpenStudy (anonymous):

4 and 15

pooja195 (pooja195):

Good :) |dw:1435793307274:dw| What numbers multiply to make -76 but add to make 36?

OpenStudy (anonymous):

where did you get 36 from

pooja195 (pooja195):

?

OpenStudy (anonymous):

you said "What numbers multiply to make -76 but add to make 36? "

pooja195 (pooja195):

oops hold on

OpenStudy (anonymous):

and I thought we had to find the numbers that multiple to -76 and had a sum of 15

pooja195 (pooja195):

Oh right >_< im sorry! :( |dw:1435793524098:dw|

OpenStudy (anonymous):

haha its okay, 19 and 4

pooja195 (pooja195):

19 and 4 are correct BUT it would be -4 :) 19 and -4 now we do some grouping :) \[\huge~\rm~(2x^2-4x)+(19x-(-38))\] \[\huge~\rm~(2x^2-4x)+(19x+38)\]

pooja195 (pooja195):

find the GCF of each and divide

OpenStudy (anonymous):

divide?

OpenStudy (anonymous):

Ok, I got (2x+19)(x-2)

pooja195 (pooja195):

Thats correct! :)

OpenStudy (anonymous):

wooo! thanks for the help

pooja195 (pooja195):

No probs let me know if you need more help ^-^

OpenStudy (anonymous):

Hey, @pooja195 can you actually help me on one more?

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