(1)(-2x^2y^3)^2乘(xy)^3 (2)(2a+3b)(3a-2b) (3)5x^3(x+4)(x-4) (
3乘a= b乘h乘2= x乘y= 2 乘 x= x乘x= 4乘a+5乘b= x乘x乘8-3乘x=
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|+
求大手啊6xy[x^2(5x+3)-3x^2(-4y)] 还有 [(a+b)(a-b)-(a-b)^2]除以4b 还有[
(1).设A=2X²-3Xy+y²+X-3y,B=4X²-6xy+2y²+4X-
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
已知:A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B
3a-3b/10ab*25a^b3/a^-b^= x^-4y^/x^+2xy+y^/x+2y/2x^+2xy
化简题.化简,(a^-3b^4)^2乘(3a^2b)^-2.(x+y)乘x^2/x^2-y^2+y^2/y-x.y-3/
x²(x+y)(y-x)-xy(x+y)(x-y) 已知a+b=4,ab=-2,求多项式3a²b+3
对于有理数a,b定义a乘b=3a+2b,则(x+y)乘(x-y)乘3x化简后得?
A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y,若x=
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若x