(1)(X^2+y^2)^2-4X^2y^2 (2)4(a+2b)^2-9(a-2b) ^2 (3(1)(X^2+y^2)^2-4X^2y^2 (2)4(a+2b)^2-9(a-2b) ^2(3)(X^2+X)^2+1/2(X^2+X)+1/16 分解因式
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(1)(X^2+y^2)^2-4X^2y^2 (2)4(a+2b)^2-9(a-2b) ^2 (3(1)(X^2+y^2)^2-4X^2y^2 (2)4(a+2b)^2-9(a-2b) ^2(3)(X^2+X)^2+1/2(X^2+X)+1/16 分解因式
(1)(X^2+y^2)^2-4X^2y^2 (2)4(a+2b)^2-9(a-2b) ^2 (3
(1)(X^2+y^2)^2-4X^2y^2 (2)4(a+2b)^2-9(a-2b) ^2
(3)(X^2+X)^2+1/2(X^2+X)+1/16 分解因式
(1)(X^2+y^2)^2-4X^2y^2 (2)4(a+2b)^2-9(a-2b) ^2 (3(1)(X^2+y^2)^2-4X^2y^2 (2)4(a+2b)^2-9(a-2b) ^2(3)(X^2+X)^2+1/2(X^2+X)+1/16 分解因式
把(x+y),(x-y)个作为一个整体合并同类项1,7(x+y)-2(x+y)-4(x+y)+2(x+y)2,(x-y)²+2(x-y)-(x-y)-2(x-y)²
计算:(1)2/(x+y)+4y/x²-y²(2)x²/x+y-x+y
已知x-y=1,y≠0,求{(x+2y)²+(2x+y)(x+4y)-3(x+y)(x-y)}÷y的值.
1/2x-(x+y/2x -x-y)÷(x+y)
(x/x+y +2y/x+y)乘以xy/ x+2y除以(1/x+1/y)(2)(3x^2/4y)^2乘以2y/3x+ x^2/2y^2除以2y^2/x
(x-y)(x-y)2(y-x) (x+2y-?)(x-2y+?)
{(x²+y²)-(x-y)+2y(x-y)}/4y
(2X-Y)²-4(X-Y)*(X+Y)-(X-Y)*(X-1)
若x+y=4,则多项式1/2(x+y)+4(x-y)-3(x-y)-3/2(x+y)-x+y值是()
y'=(y/x)^2+y/x+4微分方程
(y-x)^4(x-y)^3+2(x-y)^6(y-x)
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
(x-2y)²+(2x-4y)(x+y)+(x+y)²
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
计算:[(x+y)³-2(x+y)²-4(x+y)]÷(x+y)
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
已知x+y=-2,试计算1/2(x+y)+4(x-y)-3(x-y)-3/2(x+y)-x+y的值