Practice the questions given in the worksheet on Remainder Theorem. Show
1. Use the Remainder Theorem, find the remainder when 4x\(^{3}\) - 3x\(^{2}\) + 2x - 4 is divided by x + 1. 2. If p(y) = y\(^{3}\) + y\(^{2}\) - 2y + 1, using Remainder Theorem, find the remainder, when p(y) is divided by (y – 3), find the value of p(a). 3. Find the remainder (without division) when (a) x\(^{2}\) - 2x + 4 is divided by x - 1 (b) 2x\(^{3}\) - 3x\(^{2}\) + 7x - 8 is divided by x - 1 4. Use the Remainder Theorem, find the remainder when x\(^{4}\) - 3x\(^{2}\) + 4x - 12 is divided by x - 3. 5. Find the remainder (without division) when (a) x\(^{3}\) + 4x + 2 is divisible by x + 2 (b) 4x\(^{3}\) - 3x\(^{2}\) + 5x + 4 is divided by 2x + 1 (c) 4x\(^{3}\) + 5x\(^{2}\) + 6x - 7 is divided by 2x - 1 6. What number should be added to x\(^{2}\) + 5 so that the resulting polynomial leaves the remainder 3 when divided by x + 3? 7. Use the Remainder Theorem, find the remainder when 4x\(^{3}\) - 3x\(^{2}\) + 2x - 4 is divided by x + 1. 8. What number should be subtracted from 3x\(^{2}\) + 5x so that the resulting polynomial leaves the remainder 1 when divided by 2x + 5? 9. Use the Remainder Theorem, find the remainder when x\(^{6}\) + 3x\(^{2}\) + 10 is divided by x - 2. 10. Find a if the remainder is a when x\(^{3}\) + 3x\(^{2}\) - ax + 3 is divided by x - 2. 11. If the polynomials ax\(^{3}\) + 4x\(^{2}\) + 3x – 4 and x\(^{3}\) - 4x + a leave the same remainder when divided by (x - 3), find the value of a. 12. Find the value of k if the remainder is -3 when kx\(^{3}\) + 8x\(^{2}\) - 4x + 10 is divided by x +1. 13. If both ax\(^{3}\) + 2x\(^{2}\) - 3 and x\(^{2}\) - ax + 4 leave the same remainder when divided by x - 2, find a. Answers for the worksheet on Remainder Theorem are given below: Answers: 1. -13 2. 31, a\(^{3}\) + a\(^{2}\) - 2a + 1 3. (a) 3 (b) -2 4. 54 5. (a) -14 (b) \(\frac{1}{4}\) (c) -\(\frac{9}{4}\) 6. -11 7. -13 8. \(\frac{21}{4}\) 9. 86 10. \(\frac{23}{3}\) 11. a = -1. 12. 25 13. \(\frac{3}{10}\) ● Factorization
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