作业帮5/12[-3/4(x-y)^3]*(x+y)^2*(-x-y)^3*5/6(y-x)^2
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5/12[-3/4(x-y)^3]*(x+y)^2*(-x-y)^3*5/6(y-x)^2
5/12[-3/4(x-y)^3]*(x+y)^2*(-x-y)^3*5/6(y-x)^2
5/12[-3/4(x-y)^3]*(x+y)^2*(-x-y)^3*5/6(y-x)^2
原式=4a(a+1)/a(a+2)-a(a-4)/(a+2)2
=4(a+1)/(a+2)-a(a-4)/(a+2)2
=(4a+4)(a+2)-a(a-4)]/(a+2)2
=(3a2+16a+8)/(a+2)2
=-5/16(x-y)^3*(x-y)^2[-(x-y)^3]*5/6(x-y)^2
=25/96(x-y)^10
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+（x-3y)(x-5y)+(x-2y)(x-4y)
化简(x+y)-(2x+y/2)-(3x+y/6)-(4x+y/12)-(5x+y/20)-……-(10x+y/90)
(1)x^2*x^8+x^13/x^3 (2)a^19/a^12/a^3 (3) (x-2y)^5/(2y-x)^3 (4)(x-y)^5/(x-y) (5)(x-y)^6/(y-x)^4
分解因式 x(x-y)^5+xy(y-x)^4-x^3(x-y)3
（y-x)+x(x-y)^3-(y-x)^4 因式分解
5/12[-3/4(x-y)^3]*(x+y)^2*(-x-y)^3*5/6(y-x)^2
（5x-3y)(3y+5x)-(4y-3x)(3x-4y)
5/4(x+y)(-x-y)^3*[-4/3(x-y)]*[-3/5(y-x)^2]
解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
填空题 x+y/4=x-y/6=3x+12y+5/8 x= y=
（5x+3y)(3y-5x)-(4x-y)(4y+x)=
5x^3y(x-y)^3-10x^4y^3(y-x)^2因式分解
5x^3y(x-y)^3-10x^4y^3(y-x)^2
(3x-4y)(5x-4y)-(7x-8y)(6y-5x)
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
12（x+y）^3（y-x）/【4（x+y）^2(x-y)】
5X^3Y(X-Y)-10X^4Y^3(Y-X)^2因式分解
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11