Mathematics
7 Online
OpenStudy (anonymous):
2x^2-15x-8
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mathslover (mathslover):
\[\large{2x^2-15x-8}\]
You have to factorize this?
OpenStudy (anonymous):
yes
mathslover (mathslover):
ok so : :
\[\large{2x^2+16x-1x-8}\]
\[\large{2x(x+8)-1(x+8)}\]
mathslover (mathslover):
try to take (x+8) common
OpenStudy (anonymous):
how do you do that??
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OpenStudy (anonymous):
need help @Ganpat
OpenStudy (ganpat):
can u continue from wher mathslover stopped ??
OpenStudy (neo92):
wht z da step u dnt understnd?
OpenStudy (ganpat):
2x(x+8)−1(x+8)
what common can u take from this ??
OpenStudy (ganpat):
@broderick365 : der ??
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OpenStudy (anonymous):
8
OpenStudy (ganpat):
no no..
2x(x+8)−1(x+8)
(x+8) (2x -1)..
x+8 .. should be common right ??
OpenStudy (neo92):
@broderick365 see what is the common term there. is it 8 or ??
OpenStudy (anonymous):
yehp
OpenStudy (ganpat):
i thought u understood in previous problem. .. :(
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OpenStudy (anonymous):
not really
OpenStudy (ganpat):
ha ha, u shd have told me.. :D..
anyways.. now do u understand ??
OpenStudy (anonymous):
so the answer is 2x+1 x+8
OpenStudy (ganpat):
noo..
(x+8) (2x -1) = 0
equate each bracket to 0, and find x.. u will get 2 values..
OpenStudy (anonymous):
how do you do that??
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OpenStudy (ganpat):
x+8 = 0
and 2x -1 = 0
now, can u simplify ??
OpenStudy (anonymous):
so the answer would be -8
OpenStudy (ganpat):
one answer is x = -8..
and other is x = 1/2..