求帮忙、因式分解、 6xy^2-9x^2y-y^3= ( a-b)^3(x-y)+(x+y)(a-b)^3= 25(m-
求帮忙、因式分解、 6xy^2-9x^2y-y^3= ( a-b)^3(x-y)+(x+y)(a-b)^3= 25(m-
因式分解2x²y-xy-3y (-a+b)+c²(a-b)
设A=2x-3xy+y+x-3y,B=4x-6xy+2y+4x-y,若|x-3a|+(y+3)=0,且B-2A=a.求A
(x-A)*(B-y)=x^2-9xy+8y^2,求A,B
因式分解和计算 初二(a-b)(x-y)-(b-a)(x+y)=? 因式分解3(y-2)²-(2y+2)(-2
已知:A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
设A=2x方-3xy+y方-x+2y,B=4x方-6xy+2y方+3x-y.若|x-2a|+(y+3)的平方=0,且B-
(1).设A=2X²-3Xy+y²+X-3y,B=4X²-6xy+2y²+4X-
设A=2x的平方-3xy+y的平方-x+2y B=4x的平方-6xy+2y的平方-3x-y 若绝对值x-2a+(y+3)
已知:6x²-7xy-3y²+14x+y+a=(2x-3y+b)(3x+y+1)求a,b的值
3a(x+y)-2b(x+y)=(x+y)(?)