(x-2500)*[(3500-x)*2/100+8]=(3500-2500)*8*(1+12.5%)怎么计算,我要计算过程,
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(x-2500)*[(3500-x)*2/100+8]=(3500-2500)*8*(1+12.5%)怎么计算,我要计算过程,
(x-2500)*[(3500-x)*2/100+8]=(3500-2500)*8*(1+12.5%)怎么计算,我要计算过程,
(x-2500)*[(3500-x)*2/100+8]=(3500-2500)*8*(1+12.5%)怎么计算,我要计算过程,
(x-2500)*[(3500-x)*2/100+8]=(3500-2500)*8*(1+12.5%)
(x-2500)*(70-x/50+8)=1000*8*1.125
(x-2500)*(78-x/50)=9000
78x-2500*78-x*x/50+50x=9000
9000+195000+x*x/50-128x=0
x*x-128*50x+204000*50=0
x*x-6400X+10200000=0
根据x=[-b±√(b^2-4ac)]/(2a) 得出:x=3200或3000
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