计算:a²/a-b-a-b/b²;3x/x-5-2x/5-x.

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/09 02:20:42
计算:a²/a-b-a-b/b²;3x/x-5-2x/5-x.
x){nulhna I=++tMu*Mu+lХ_`gCm׬y fWiTUHB?* [ "]&v&XE( fݩt(l[5Kh%@LV }~qAb(Tx

计算:a²/a-b-a-b/b²;3x/x-5-2x/5-x.
计算:a²/a-b-a-b/b²;3x/x-5-2x/5-x.

计算:a²/a-b-a-b/b²;3x/x-5-2x/5-x.
第一题 是 a²/(a-b) - b²/(a-b) 吧
a²/(a-b) - b²/(a-b)
= (a²-b²)/(a-b)
= (a+b)(a-b)/(a-b)
= a+b
3x/(x-5) - 2x/(5-x)
=3x/(x-5) + 2x/(x-5)
= 5x / (x-5)