计算：y^2-x^2/4y^2-x^2-4y^2+4y^2-3xy/(x+2y)(x-2y)x-1/x^2-3x+2-x+1/x^2+3x+2-x^2/x^2-4
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/17 02:37:29
计算：y^2-x^2/4y^2-x^2-4y^2+4y^2-3xy/(x+2y)(x-2y)x-1/x^2-3x+2-x+1/x^2+3x+2-x^2/x^2-4计算：y^2-x^2/4y^2-x^2
计算：y^2-x^2/4y^2-x^2-4y^2+4y^2-3xy/(x+2y)(x-2y)x-1/x^2-3x+2-x+1/x^2+3x+2-x^2/x^2-4
计算：y^2-x^2/4y^2-x^2-4y^2+4y^2-3xy/(x+2y)(x-2y)
x-1/x^2-3x+2-x+1/x^2+3x+2-x^2/x^2-4
计算：y^2-x^2/4y^2-x^2-4y^2+4y^2-3xy/(x+2y)(x-2y)x-1/x^2-3x+2-x+1/x^2+3x+2-x^2/x^2-4
(y^2-x^2)/(4y^2-x^2)-(4y^2+4y^2-3xy)/(x+2y)(x-2y) 请检查你的题目,有点问题
=(x²-y²)/(x²-4y²)-(4y²+4y²-3xy)/(x+2y)(x-2y)
=(x²-y²-4y²-4y²+3xy)/(x+2y)(x-2y)
=(x²+3xy-9y²)/(x²-4y²)
(x-1)/(x^2-3x+2)-(x+1)/(x^2+3x+2)-x^2/(x^2-4)
=(x-1)/(x-2)(x-1)-(x+1)/(x+1)(x+2)-x²/(x+2)(x-2)
=1/(x-2)-1/(x+2)-x²/(x+2)(x-2)
=[(x+2)-(x-2)-x²]/(x²-4)
=(4-x²)/(4-x²)
=-1
计算:2xy/(x+y)².(x+y)/4y
计算:y-x分之x+y+x-y分之y-y-x分之2x-y
计算2x/x-y
计算:(x+2y)(2x-y)
计算:(x+3y)(2x-y)
计算:(2x-3y)(x+y)
计算:(-x-2y) * (3x-y)
计算：(x+y)-3(x-2y).
计算（2x-3y)(x+4y)-(3x+y)(x-2y)（2x-3y)(x+4y)-(3x+y)(x-2y)
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
(x-3y)(y+2x)-(4y-3x)(3x+4y)计算
计算：[(x+y)(x-y)-(x-y)^2+2y(x-y)]/(-2y)
计算:(x-y)^2*(x+y)^3*(-x-y)^3*(y-x)^4
计算：[（x+y）³-2(x+y)²-4(x+y)]÷（x+y)
计算[(x+y)的立方-2(x+y)的平方-4(x+y)]÷(-x-y)
计算:(x-y)^2*(y-x)^2*(x-y)^6
计算(x-y)(y^2-x^2)(-x-y)
计算(x+y)(x+y)^2(-x-y)^3