Question

`x^4 -3x^3 +6x^2 -7x+m` chia hết cho `x-1` khi m bằng

Answer 1

=>x^4-x^3-2x^3+2x^2+4x^2-4x-3x+3+m-3 chia hết cho x-1

=>m-3=0

=>m=3