2x×2000×﹙1+x﹚=60000÷2x

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2x×2000×﹙1+x﹚=60000÷2x2x×2000×﹙1+x﹚=60000÷2x2x×2000×﹙1+x﹚=60000÷2x2x×2000×﹙1+x﹚=60000÷2x4000X+4000X&

2x×2000×﹙1+x﹚=60000÷2x
2x×2000×﹙1+x﹚=60000÷2x

2x×2000×﹙1+x﹚=60000÷2x
2x×2000×﹙1+x﹚=60000÷2x
4000X+4000X²=30000X
4000X²-26000X=0
4X²-26X=0
2X²-13X=0
X﹙2X-13﹚=0
X=0或X=6.5

4000x+4000x²=30000x
4000x²-26000x=0
4x²-26x=0
2x²-13x=0
x﹙2x-13﹚=0解得:x=0或x=6.5