Solve the equation .
Answer and explanation
Correct answer: C.
- Step 1: , so is a factor. Step 2. The quotient is , so . **Answer: . Why not the others:** has every sign reversed, factorises as , which expands to , and only stops after the first factor.
Practise more Polynomials and the remainder theorem.
Free questions with an explanation for every one, and full timed Singapore GCE O-Level mock tests.