分式的加减(1/6x-4y )+ (1/6x-4y )+ (4y/4y^2-9x^2)
分式的加减(1/6x-4y )+ (1/6x-4y )+ (4y/4y^2-9x^2)
分式的加减:[(x/y-y/x)除以(x+y)+x(1/y-1/x)]除以1+x/y,其中x=5,y=2
计算分式加减1、4/(x-2)-(x-6)/(2-x)2、(x-y)²/(2xy)-(x²-y²
x-y分之2减去(x-y)的平方分之x+y 分式加减咋做啊?
因式分解 (1).(x+y)(x+y-6)+9 (2).x²-16y²-x-4y
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
{x+y/2+x-y/3=6 4(x+y)-3(x-y)=0 用加减消元法解方程组
1/x-1/y=4,求分式(3x+xy-3y)/(x-2xy-y)
x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组
用加减消元法(1)2x-y=8 2x+5y=-4 (2)2x+5y=17 2x-3y=1 (3)x-y=5 2x+3y-
化简求值:【(x+Y)(X-Y)-(X-Y)的平方+2Y(2-Y)】除4Y,其中X=1 Y=2
一道初中分式加减题(1)[(-z/x^2y)^-3]÷[(xz/-y)^-2]×(-x/y^2)^4; (2)[x^-2