whats the remainder when x^4 + 3x^2 + 6x - 3 is divided by (x-1)?

Using synthetic division :-
1 | 1____0____3____6____-3
__|_____ 1____1____4____10
__| 1____1____4___10____7

x³ + x² + 4x + 10 REMAINDER 7

remainder is 3

4 + 3 + 6 - 3 |_ 1
+ 4 + 7 + 13
4 + 7 + 13 + 10

10 is your remainder or 10/(x - 1)

the remainder is positive 7

7
i can explain the method if you need me to