6000(1-x)²=4860

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6000(1-x)²=4860

6000(1-x)²=4860
6000(1-x)²=4860

6000(1-x)²=4860
6000(1-x)²=4860
100(1-X)^2=81
(1-X)^2=81/100
1-x=±9/10
x=1±9/10
x=1/10或x=19/10

6000(1-x)²=4860
(1-x)²=0.81
1-x=±0.9
x=0.1,x=1.9

6000(1-x)²=4860
(x-1)^2=41/100
x-1=±√41/10
x=1±√41/10