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5/12[-3/4(x-y)^3]*(x+y)^2*(-x-y)^3*5/6(y-x)^2

来源：学生作业帮 编辑：神马作文网作业帮 分类：数学作业 时间：2024/11/12 07:04:04
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
x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8 化简(x+y)-(2x+y/2)-(3x+y/6)-(4x+y/12)-(5x+y/20)-……-(10x+y/90) 数学(x-y)^5*(y-x)^3*(x-y)^2 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 2(2x+3y)(3x+2y)-(6x-y)(2x-5y) （x+2)(x+3) (x-4)(x+1) (y+4)(y-2) (y-5)(y-3) 6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5 3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27 (2X-3y)-(5x-y) 计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2) 5/12[-4/3（x-y）^3] *（x+y）^2 * (-x-y)^3 * 5/6(y-x)^2 解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12