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+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