9(x-y)^2-12(x-y)+4 (x^2+y^2)^2-4x^2y^2..没有分得很开,请谅解...
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9(x-y)^2-12(x-y)+4 (x^2+y^2)^2-4x^2y^2..没有分得很开,请谅解...
9(x-y)^2-12(x-y)+4 (x^2+y^2)^2-4x^2y^2
..没有分得很开,请谅解...
9(x-y)^2-12(x-y)+4 (x^2+y^2)^2-4x^2y^2..没有分得很开,请谅解...
9(x-y)^2-12(x-y)+4
=[3(x-y)+2]²
=(3x-3y+2)²
(x^2+y^2)^2-4x^2y^2
=(x²+y²+2xy)(x²+y²-2xy)
=(x+y)²(x-y)²
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
4-12(x-y)+9(x-y)^2 因式分解
4(x+y)^2-12(x+y)+9因式分解
4(x+y)^2-12(x+y)+9
因式分解2x^2y-x^3-xy^2 4-12(x-y)+9(x-y)^22x^2y-x^3-xy^24-12(x-y)+9(x-y)^2
(1).x^2-xy+x (2).m^2n-mn^2+mn (3).9x^3y^3-21x^3y^2+12x^2y^2 (4).x^2(x-y)+y^2(x-y)多项式因式分解
{(x²+y²)-(x-y)+2y(x-y)}/4y
(y-x)^4(x-y)^3+2(x-y)^6(y-x)
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
y'=(y/x)^2+y/x+4微分方程
4+12(x-y)+9(x-y)
(x-2y)²+(2x-4y)(x+y)+(x+y)²
(x+y)/2- x-y/2=6 3(x+y)=4(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,
4x^-9y^-(2x+3y)
3x+y=2 -y/x+y=123x+y=2 (-y/x)+y=12
x²y-2x²-y+2 4x(x-y)²-12(x-y)³ 因式分解-x³+x²-4分之1x