x/3(y-1),2/6-6y
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
(1)已知x+y=6,x²-y²=5,求x-y的值(2)若x+y=3,x²+y²
不解方程2x+y=6,x-3y=1,求7y(x-3y)^2-2(3y-x)^3 的值
已知方程组2x+y=6 x-3y=1,求7y(x-3y)²-2(3y-x)³的值
9xy(x-y)(x+1)-3y(x-y)(3x+2y)+6y的平方(x-y)(x+1),因式分解
不解方程组x+4y=6 x-3y=1求代数式7y(x-3y)的平方-2(3y-x)的立方
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
先化简,在求值:(x-y)²+(3x-2y)(2x+y)-x(6x-y)