作业帮（x/2 25.2)/46.5=(x/2-25.2)/(46.5-8.4)
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（x/2 25.2)/46.5=(x/2-25.2)/(46.5-8.4)
（x/2 25.2)/46.5=(x/2-25.2)/(46.5-8.4)
（x/2 25.2)/46.5=(x/2-25.2)/(46.5-8.4)
=【（x/2+25.2)÷46.5】×【46.5-8.4]+【（x/2+25.2)÷46.5】×【46.5-8.4]+x/2+25.2=x
【（x/2+25.2)÷46.5】×【46.5-8.4]=x/2-25.2
(x+50.4))÷46.5=(x-50.4))÷38.1
38.1(x+50.4)=46.5(x-50.4)
(46.5-38.1)x=(38.1+46.5) ×50.4
8.4x=84.6×50.4
x=84.6×6=507.6
f(x)=x^2+x (x
x^2=x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x平方-x+2=2x/x+1
f(x)=x|x|+2x (x
(X+1)X(X+2)X(X+3)=504
（x/2 25.2)/46.5=(x/2-25.2)/(46.5-8.4)
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