大神,I WANT TO YOU

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大神,I WANT TO YOU

大神,I WANT TO YOU
大神,I WANT TO YOU

 


大神,I WANT TO YOU
设水渠宽为x,由题可得:
9600+162x乘以4+64x乘以2-8x的平方=162乘以64
648x+128x-8xx=10368-9600
776x-8xx=768
97x-xx=96
-xx+97x-96=0
x1=(-97+√97的平方-{4x﹣1x-96})*-2
=(-97+95)*-2
=1
x2=(-97-95)*-2
=96
根据题意x2不符合实际情况,地总宽才64,挖4条宽96的水渠是不可能的,应该舍去,所以x=x1=1 水渠宽1米