Mathematics
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OpenStudy (anonymous):
(x + 8)/(x +6)(x -8) * 4x(x + 10)/( x + 10)
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OpenStudy (luigi0210):
\[\frac{ x+8 }{ (x+6)(x-8) }*\frac{ 4x(x+10) }{ x+10) }\]
This?
OpenStudy (anonymous):
yes
OpenStudy (luigi0210):
What are we doing exactly? simplifying? multiplying?
OpenStudy (anonymous):
We doing both
OpenStudy (luigi0210):
Well first simplify the equation.
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OpenStudy (anonymous):
Okay I really don't know how to simplify this one
OpenStudy (luigi0210):
Well look at the equations, anything look the same on the top/bottom?
OpenStudy (anonymous):
yea the number on the right (x+10) (x+10)
OpenStudy (luigi0210):
Good, now cancel them out and see what the leaves you with
OpenStudy (anonymous):
it leaves you with \[(x + 8)/(x +6)(x -8) * 4x\]
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OpenStudy (luigi0210):
correct! Now just multiply it out
OpenStudy (anonymous):
\[x ^{3}-384*4x\]
OpenStudy (luigi0210):
:l
OpenStudy (anonymous):
that's not the right answer
OpenStudy (luigi0210):
Nope ^_^'
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OpenStudy (anonymous):
what you suppose to get when you multiply it.
OpenStudy (luigi0210):
\[\frac{ x+8 }{ (x+6)(x-8) }*4x=\frac{ 4x(x+8) }{ x^2-2x-48 }\]
OpenStudy (luigi0210):
Finish it by multiplying the numerator
OpenStudy (anonymous):
\[\frac{ 4x ^{2} + 32x }{ (x+6) (x-8) }\]
OpenStudy (luigi0210):
Yup :)
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OpenStudy (anonymous):
that's the answer
OpenStudy (luigi0210):
Yes sir!
OpenStudy (anonymous):
thank you soo much
OpenStudy (luigi0210):
You are very welcome :)