16x^6-25y^4 x^2-4xy+4y^2 用公式法只做x^2-4xy+4y^2

x^+2xy+y^+4=16 x^-2xy+y^=16 求(3xy+6y^)+|x^-(2xy+2y^-3x^)|的值 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 因式分解30题(要过程)am+an+bm+bn x^2+5y-xy-5x x2+xy+2xz+x (a+b)x-(b+a)y -12x(x-y)-(y-x)x^2 2x^2+4x+2 x(x+z)-y(y+z) 2(x^2-3ab)+x(4a-3b) 4x^2+12xy+9y^2-25 x^4-16 16x^4-1 x^2+9x+8 x^2-10xy+24y^2 2x^2+15xy-8y^2 3x^2-6xy+3y^2 24x^2+22x-21 -x^2+4xy- xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2 （X-3xy+4xy-y）-[-2x-2（xy-3/2xy）-y]+6xy的过程 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) 1-2/x+y=xy,4y+6x=xy.求xy的解? 因式分解xy(xy+2)+6(xy+8)-4(x+y-2)^2-16(x+y+1)谢谢 2X^+XY-Y^-4X+5Y-6 2x^+xy-y^-4x+5y-6=? 诺x+y=6,xy=4 求(5x-4y-3xy)-(8x-y+2xy) 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 4x^2y-6xy^2+2xy因式分解 因式分解：-4x^2y-6xy^2+2xy 16x^6-25y^4 x^2-4xy+4y^2 用公式法只做x^2-4xy+4y^2 因式分解：x(y-3)-(2y-6) (x+y)^3-(x-y)^2(x+y) x(x^2-xy)-(4x^2-4xy) 分解公因式分解 x(y-3)-(2y-6) 2.(x+y)^3-(x-y)^2(x+y) 3.x(x^2-xy)-(4x^2-4xy) (x^2+2xy+y^2-4xy)*(x^2-2xy+y^2+4xy)