3x^2-4x+6=9
3x^2-4x=(9-6)=3
(3x^2-4x)/3=3/3=1
得到x^2-4/3x=1
所以2x^2-8/3x=2
3x^2-4x+6=9 求2x^2-8/3x+6=?
3x^2-4x+6=9 求2x^2-8/3x+6=?
数学人气:156 ℃时间:2020-03-23 10:17:05
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