Jawabanmu

2014-06-02T16:04:36+07:00
A(x-1)² -b = a(x²-2x+1) - b
= ax² -2ax + a -b
2x² = ax² ---> a=2
-4x = -2ax ----> a=2
-1 = a-b
-1 = 2-b
b = 3

a+ b = 2 + 3 = 5