2X*(X+2X/3)=480怎么解
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2X*(X+2X/3)=480怎么解
2X*(X+2X/3)=480怎么解
2X*(X+2X/3)=480怎么解
2x*x*(1+2/3)=480
x*x=144
x=+-12
整理,得
5x²=720
x²=144
x=12或x=-12
10/3 x^2=480
x^2=144 x=±12
2X*(X+2X/3)=10/3乘X的平方=480,X=±12
2X*(X+2X/3)=480
2XX+4XX/3=480
6XX+4XX=480*3
10XX=480*3
XX=48*3
xX=3*16*3=3*3*4*4
X=3*4=12