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OpenStudy (anonymous):
factor 15x^3+40x^2-80x
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OpenStudy (luigi0210):
You could factor out a 5x
OpenStudy (anonymous):
that makes sense. Then I would have 5x( 3x^2+8x-16)
OpenStudy (luigi0210):
Exactly! :D
OpenStudy (anonymous):
how do I factor 3x^2+8x-16
OpenStudy (luigi0210):
Use the quadratic formula
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OpenStudy (anonymous):
ah yes that makes sense. thanks!
OpenStudy (luigi0210):
If you do it right you should get: (3x-4)(x+4)
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