babydoll332
Use the Factor Theorem to determine whether the first polynomial is a factor of the second polynomial.
x  5; 3x^2 + 7x + 40



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babydoll332
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YES right?

zordoloom
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x5 is not a factor

babydoll332
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so no?

zordoloom
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nope

ZeHanz
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x5 is a factor if substituting 5 in the second gives 0:
3*5² + 7*5 + 40 = 75 + 35 + 40 = 150 <> 0, so NO.

RadEn
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this cant be factored
check the value of D (discriminant) = b^24ac
if D < 0, it has complex roots