(1-x)²=1.98/2.25=0.88
(1-x)²=88/100=22/25
1-x=根號(hào)(22)/5
x=1-根號(hào)(22)/5
解方程 2.25%(1-x)²=1.98%
解方程 2.25%(1-x)²=1.98%
其他人氣:754 ℃時(shí)間:2020-02-03 22:20:26
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