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OpenStudy (ammarah):
Find all zeros of the polynomial function. f(x)= x^3+2x^2-5x-10
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OpenStudy (ammarah):
ok so first i list the rationals right?
OpenStudy (phi):
yes. My first guess is a small negative number.
OpenStudy (ammarah):
-2
OpenStudy (phi):
now use synthetic division or divide by (x+2)
OpenStudy (ammarah):
x=-2,-rad5,posrad 5
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OpenStudy (phi):
looks good
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