Further MathematicsPolynomials and the remainder theoremWAEC
If (x + 1) is a factor of x³ + kx² − x − 2, find the value of k.
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Answer: B. 2
f(−1) = −1 + k + 1 − 2 = k − 2 = 0, so k = 2.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.