ANSWER:
EXPLANATION:
We can check this using the factor theorem.
"The factor theorem states that a polynomial f(x) has a factor (x - k) if and only if f(k)=0 (i.e. k is a root)."
In the problem,
Sove for f(k).
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Answers & Comments
ANSWER:
No, x + 2 is not a factor of x³–x²–5x–3.
EXPLANATION:
We can check this using the factor theorem.
"The factor theorem states that a polynomial f(x) has a factor (x - k) if and only if f(k)=0 (i.e. k is a root)."
In the problem,
Sove for f(k).