分式化简(1)x^2-25/2x-10(2)2x-y/4x^2-4xy+y^2若a/b,则a^2-ab+b^2/a^2+

3a-3b/10ab*25a^b3/a^-b^= x^-4y^/x^+2xy+y^/x+2y/2x^+2xy 分式通分 分式ab/xy^2,bc/x(a-b),a/y(b-a)的最简公分母 x²（x+y)(y-x)-xy(x+y)(x-y) 已知a+b=4,ab=-2,求多项式3a²b+3 分解因式1.2a(x-y)-3b(y-x)2.-x^y-2xy+35y3.a^(x-y)-4b^(x-y)若|a+2|+ 分式的基本性质 约分a^2+2ab+b^2/(a+b)^3x+xy/y^2-1 1+2x/4x^2+4x+1 x^2+y 化简分式；（1）3xy/42x-3xy（2）a-b/a²-b²（3）x²+2xy+y
化简下列分式:x^2+x/(x^2-1) x^2+4x/x^2+8x+16 ab^2(a-b)/a^2b-ab^2 分式4y+3x/4a,x^2-1/x^4-1,(x-y)^2/x+y,a^2+2ab/ab-2b^2中是最简分式是哪几个 已知：A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B 几道因式分解..4ab(a+b)^2-6a^2b(a+b)(x+y)^2(x-y)+(x+y)(x-y)^22a(a-3 几道分式约分题目 急1 2z^3+x分之1-4x^42 y-x^2y分之x^2y-2xy+y3 a^2-6ab+9b^2 A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y,若x=