SAT Math Practice Question
$$a x^{3}+b x^{2}+c x+d=0$$In the equation above, $a, b, c$, and $d$ are constants. If the equation has roots $-1,-3$, and 5 , which of the following is a factor of $a x^{3}+b x^{2}+c x+d$ ?
- A.$x-1$
- B.$x+1$
- C.$x-3$
- D.$x+5$
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