(2x+3)(y-1)-(x+1)(2y-3); (2a+3b)(2a-3b)(4a^2-9b^2)
(3x-y)(3x+y)+y(x+y);(a+1/2b)(a-1/2b)-(3a-2b)(3a+2b)快点,
1.已知集合A={(x,y)|y=2x+1},B={(x,y)|y=x+3},a∈A,b∈B,求a
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
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
3x(a-b)-2y(b-a) 因式分解
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
已知:A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B
分解公因式p(x-y)-q(y-x)(a+b)(a-b)-(b+a)10a(x-y)^2-5b(y-x)3p(m-2n)
把(a+b)和(x+y)各看成一项,合并同类项:(1)4(a+b)+2(a+b)-(a+b); (2)3(x-y)^2-
计算 1.[(a+b)^2-(a+b)(a-b)]÷(-b) 2.[(x+y)(2x+y)+(x+y)(x-y)]÷3x
A.A+(4X+3Y)B.A+(4X+6Y) C.A+2(
①[(x+y)^2-(x+y)(x-y)]/2y②(-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4