(1)x^2-2x/4-x^2 (2)a^2-6a+9/a^2-9 (3)3ax ^3X^3y/9xy^2-9axy^2
x^2-2xy+y^2+3x-3y+2 x^2+(a+1)x-(6a^2-13a+6) x^2+xy-2y^2+2x+
约分 (9xy的平方-9axy的平方)分之(3ax的3次方y-3x的三次方y) 约分 (x的平方-3x+2)分之(x的平
化简.x^2-3xy/x^2-6xy+9y^2
已知X,Y是实数,(根号3x+4)+y²-6y+9=0 AXY-3Y+2=0 求A
因式分解 (1) ax^4-81a (2) 4x^2(x-y)+2x(x-y) (3) a^2x^2+4a^2xy+4a
ax^3y+axy^3-2ax²y² x²(x-y)+(y-x) 已知|3x+2y+3|+
因式分解3a(x-y)+9(y-x) x的平方+y的平方-1-2xy (x+2)(x+6)+x的平方-4
计算(1)x/x+y-x/x-y (2)a+2+4/a+2 (3)x^2-y^2/xy÷(x+y)
因式分解:4a^2(x-y)+9(y-x) -4x^2y^2+x^3y+4xy^3
因式分解:(1)-4a3b2+10a2b-2ab;(2)6(x+y)2-2(x+y);(3)-7ax2+14axy-7a
因式分解.1.ax^2+(a^2+1)x+a 2.3x^2+5xy-2y^2+x+9y-4 3.4(x-y+1)+y(y
3y/2x+2y+2xy/x²+xy 2x/x²-64y²-1/x-8y (1/a+1/b