分式方程练习题求解
问题描述：
分式方程练习题求解
3x+1／x2 –x–6=(A／x–3) –(B／x+2)
答
A/(x-3)-B/(x+2)
=(Ax+2A-Bx+3B)/(x-3)(x+2)
=[(A-B)x+(2A+3B)/(x-3)(x+2)
∴A-B=3,2A+3B=1
解得A=2,B=-1