几道初一计算题 (5 16:27:18)
问题描述：
几道初一计算题 (5 16:27:18)
1.18A^2X^2+24A^2X^2Y+8X^2Y^2
2.3-X\2-X \ [X+2-(5\X-2)]
3.3Y-2\Y-1 - Y+1\1-Y=2
答
1.18a²x²+24a²x²y+8x²y²=2x²(9a²+12a²y+4y²)=2x²(3a+2y)²2.(3-x/2-x)/ [x+2-(5\x-2)]=(3-x/2-x)/ (x²-4-5/2)=(3-x/2-x)*(x-2)/(x+3)(x-3)=-1/x+3...