解(10X+1)(500-10X)=8000(10X+1)(500-10X)=8000 我算了很久还是不对.郁闷.
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解(10X+1)(500-10X)=8000(10X+1)(500-10X)=8000 我算了很久还是不对.郁闷.
解(10X+1)(500-10X)=8000
(10X+1)(500-10X)=8000
我算了很久还是不对.郁闷.
解(10X+1)(500-10X)=8000(10X+1)(500-10X)=8000 我算了很久还是不对.郁闷.
(10X+1)(50-X)=800
500x-10x^2+50-x=800
10x^-499x+750=0
好像不是有理数阿.
放心放心 高卡不会出这麽麻烦的计算题的
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