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共找到 16271 与-1≤x-y≤3 相关的结果,耗时474 ms
求因式分解的答案:1.x^4-11x^2y^2+y^22.x^4-12x+3233.a^3+b^3+c^3-3abc4.x^4+7x^3+14x^2+7x+15.(x+y)^3+2xy(1-x-y)-16.x^3+x^2+10x-67.x^4+3x^3-3x^2-12
数学
-48.4x^4+4x^3-
谁帮我做因式分解1)5m2n-15mn22)-7x3y2-21x2y33)-15xy-5x24)5a2(x-y)+10a(y-x)5)(x-y)3(y-x)26)5a2(x-y)+10a(y-x)7)(m-n)2-10(n-m)+258)(x+y)2-2(x+y)(x
数学
(x+y)2-2(x+y)(
因为发了很多条,所以悬赏分为0,求解下列微分方程1.(1+y²sin2x)dx-ycos2xdy=02.dy/dx=(y-x+1)/(y+x+5)3.x(lnx-lny)dy-ydx=04.(1+2e^(x/y))dx+[2e^(x/y)](1-x/y)dy=05.y
数学
.y〃+y=x+3sin2x
4(x-y-1)=3(1-y)-2,2/x+y/3=2用代入法解4(x-y-1)=3(1-y)-2,x/2+y/3=2不小心写错了
数学
用代入法接下列方程1)y+2=1-x2)x+3y=43)3y-2x=13x+2y=-31/4x+1/2y=0x+2/3=y+1/44)x+y/2+2/3y=25)x+y/3+x-y/2=63x/2-2y=03(x+y)-2(x-y)=28
数学
1.b(x-y)+c(y-x)=(x-y)()2.a(a+b)^2+(b+a)^3中的公因式是3.整式(a+b-c)(a-b+c)+(b-a+c)(b-a-c)的公因式是二.1.-2x^3+6x^22.5xy-x^2y+xy^23.-6x^3y^4-8x^2y^5+1
数学
y^2 3.-6x^3y^4
1、1/(1+√2)+1/(√2+√3)+1/(√3+√4)+1/(√4+√5)+1/(√5+√6)=?2、若x²+xy-2y²=0,则(x²+3xy²+y²)/(x²+y²)=?3、解方程2(x²+1/x²)-3(x+1/x)-1=?4、1/(1×3)+1/(2×4)
数学
+1/(3×5)+……+1/
-7-9x=2x*-7求X值2.((x+y)/4)-((x-y)/3)=1((x+y)/4)+((x-y)/2)=93.(3/(x+1))-(4/(y-2))=2(1/(x+1))+(y/(y+2))=5第二第三题求XY两值
数学
1.x^6-y^62.(x^2+4x+8)^2+3x^3-14x^2+24x3.2x^2+3xy-2y^2-x+8y-64.已知x+y=3,x^2+y^2-xy=4求x^4+y^4+x^3y+xy^35.已知x^2+y^2+z^2-2x+4y-6z+14=0求x+y+z
数学
+z6.方程 x^3-y^3
1.x+y+z≠0且x/(y+z)=y/(x+y)=z/x+y,求x/(x+y+z)2.x+y+z=0,求证1/(x^2-y^2-z^2)+1/(y^2-z^2-x^2)+1/(z^2-x^2-y^2)=03.x^2-y^2=xy,求x^2y^-2+x^-2y^24.n
数学
^-2 y^2 4.n/m中
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