1. Find the remainder when 4x3 – 3x2 + 4x – 2 is divided
by
(i) x + 2
(ii) x + 1/2
Answers
Step-by-step explanation:
(i) x−1)4x³−3x²+4x−2(4x²+x+5
4x³−4x²
− +
_____________________
x²+4x
x²−x
− +
_____________________
5x−2
5x−5
− +
_____________________
3
Answer:
i) Remainder: -46
ii) Remainder: -11/4
Step-by-step explanation:
i)
x + 2) 4x³ - 3x² + 4x - 2 (4x² - 9x + 22
- 4x³ - 6x²
- 9x² + 4x - 2
+ 9x² + 18x
+ 22x - 2
- 22x - 44
- 46
Remainder: -46
ii) x + 1/2) 4x³ - 3x² + 4x - 2 (4x² - 5x + 3/2
- 4x³ - 2x²
- 5x² + 4x - 2
+ 5x² + 5/2x - 2
+ 3/2x - 2
- 3/2x - 3/4
- 11/4
Remainder: - 11/4