Same chapter3 marksDifficulty: Medium
Find k if x3 + kx2 − 3x + 6 leaves a remainder of 10 when divided by (x − 2).
Factorisation of Polynomials
1 markDifficulty: Medium
If (x + 2) is a factor of f(x), then:
- af(2) = 0
- bf(−2) = 0
- cf(0) = 2
- df(0) = −2
Original Khojo Papers practice question — not from a past board paper.
Answer
f(−2) = 0
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
By the factor theorem (x − a) is a factor when f(a) = 0, and here a = −2.
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