数学初二解方程方法 初二数学（解方程）
\u6570\u5b66\u521d\u4e8c\u89e3\u65b9\u7a0b\u4e24\u8fb9\u540c\u4e58\u4ee5x²-4\u5f97\uff1a
(x-2)²-12=x²-4
x²-4x+4-12=x²-4
4x=-4
x=-1
\u7ecf\u68c0\u9a8c\uff0cx=-1\u662f\u539f\u65b9\u7a0b\u7684\u89e3
解分式方程的步骤：
一，去分母。方程的两边同时乘以各分母的最简公分母，把分式方程转化为整式方程；
二，解这个整式方程；
三，检验。把方整式方程的解带入到最简公分母，使最简公分母为零的根是分式方程的增根。使最简公分母不为零的根是原分式方程的根。
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