解方程:x(2X-3)+2x(x-1)=4x(x-2)+9

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解方程:x(2X-3)+2x(x-1)=4x(x-2)+9

解方程:x(2X-3)+2x(x-1)=4x(x-2)+9
解方程:x(2X-3)+2x(x-1)=4x(x-2)+9

解方程:x(2X-3)+2x(x-1)=4x(x-2)+9
2x²-3x+2x²-2x=4x²-8x+9
-5x=-8x+9
3x=9
x=3

2x²-3x+2x²-2x=4x²-8x+9
-5x=-8x+9
3x=9
x=3

3

2X^2-3X+2X^2-2X=4X^2-8X+9
4X^2-5X=4X^2-8X+9
3X=9
X=3

X=3

xx表示x的平方;
2xx-3x+2xx-2x=4xx-8x+9;
4xx-5x=4xx-8x+9;
3x=9;
x=3