计算(1500x+1500)x+(1500x+1500)=2160

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计算(1500x+1500)x+(1500x+1500)=2160

计算(1500x+1500)x+(1500x+1500)=2160
计算(1500x+1500)x+(1500x+1500)=2160

计算(1500x+1500)x+(1500x+1500)=2160
1500x^2+1500x+1500x+1500=2160
1500x^2+3000x+1500=2160
x^2+2x+1=1.44
(x+1)^2=1.44
x+1=±1.2
x1=0.2 ,x2=-2.2