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解方程:x2+1x-1-3x-3x2+1+2=0.-数学
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(1)先化简,再求值:(a-2)2+a(a+4),其中;(2)解方程:。-九年级数学
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题目简介
解方程:xx+1+1=2x+1x.-数学
题目详情
答案
x2+x2+x=2x2+3x+1,
解这个整式方程得:x=-
经检验:把x=-
∴原方程的解为x=-