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OpenStudy (anonymous):
Roots of a cubic Show that the equation x^3-15x+1=0 has three solutions in the interval [-4,4].
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OpenStudy (dan815):
okkayy
OpenStudy (dan815):
is it supposed to be 15x?
OpenStudy (dan815):
or x^2
OpenStudy (dan815):
or is it really x^3-14 ?
OpenStudy (precal):
are you missing an x behind the 15, that is what is being asked
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OpenStudy (precal):
|dw:1363328811410:dw|if you graph it, it should cross the x axis in 3 places (if it has 3 solutions)
OpenStudy (precal):
|dw:1363328850933:dw|
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