NumericalModerate2 marks
3(i)
The polynomial kx³ + 3x² − 11x − 6 when divided by (x + 1), leaves a remainder of 6.
Using the value of k factorise completely the polynomial kx³ + 3x² − 11x − 6
Topic: Remainder and factor theorem
Previous-year question practice database
Answer
Exam answer
2x³+3x²−11x−6 = (x−2)(2x+1)(x+3).
Explanation
Using k=2, test rational roots and divide/factor completely.
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