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Mathematics
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OpenStudy (anonymous):
2x^2+15x-38
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TheSmartOne (thesmartone):
And what about that...?
OpenStudy (anonymous):
Unsimplify
pooja195 (pooja195):
Factor?
OpenStudy (anonymous):
Yeah
pooja195 (pooja195):
|dw:1435793121786:dw|
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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
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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|
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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)
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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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