60(x-1)(x-1) =48.6 解方程

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60(x-1)(x-1) =48.6 解方程
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60(x-1)(x-1) =48.6 解方程
60(x-1)(x-1) =48.6 解方程

60(x-1)(x-1) =48.6 解方程
60(x-1)²=48.6
(x-1)²=0.81
x-1=0.9 或 x-1=-0.9
x=1.9 或x=0.1

(x-1)²=48.6/60=0.81
x-1=±0.09
x=0.91 x=1.09

x=1.9或x=0.1

x=1.9.过程:由题意,得,(x-1)(x-1)=68.6/60=0.81,所以x-1=0.9,x=1.9

60(x-1)(x-1) =48.6
(x-1)^2=0.81
x-1=±0.9
x1=1.9 x2=0.1

(x-1)²=0.81
x-1=0.9 x-1=-0.9
x=1.9 或x=0.1