Question

Use synthetic division to find the result when x3 + 3x2 – 21x – 28 is divided by
- 4.

Answer 1

= ×150

Explanation:

1. ×3+3×2-21×-28÷4 use BODMAS,now we start with division bcoz there isno bracket or of.
2. -28÷4= -7 then we go to multiplication
3. ×3+3×2-21×-7 .......3×2=6
4. ×3+6-21×-7......-21×-7 =147........then we finally add
5. ×3+147=×150