What must be the value of k in the quadratic equation P(x) = x² - 3x + k, when x + 3 is a factor of P(x)?
A. - 15
B. - 16
C. - 17
D. - 18
A. - 15
B. - 16
C. - 17
D. - 18
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Answer:
D. - 18
Step-by-step explanation:
Substitute the x from the factor
x + 3
x=-3
(-3)^2 - 3(-3) + k
9+9+k
Transpose
K= - 18