x^2-12xy+36y^2-6x+36y+8答好给5分.

因式分解：x^2 -12xy+36y^2 - x + 6y （x-6y)(x-6y-1) x^2+xy+x=36,y^2+xy+y=20,求x+y. 12X^2+XY-6Y^2 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) xy-2x+6y-12 xy+8 (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x， 因式分解 x^2 -12xy+36y^2-x+6y 3x^2y(1+2x)(1-2x) 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 在实数范围内因式分解：(1)x^2-8xy+12y^2(2)x^2-7(3)x^4-36(4)x^4-6x^2+5(5)a^2-4a+1(6)x^3-4(x-2x^2)(7)2x^2-8xy+5y^2(8)3x^2y^2-5xy-1(9)-4x^2-8xy+y^2(10)-y^2x-4x^2y+2x^3 因式分解：9-x^2+12xy-36y^2 分解因式:36x^2+12xy+y^2 计算 -36x^ 2+12xy-y^2 -36x^2y^2-12xy-1 提取公因式 解方程组：xy/x+y=-6(1) 2xy/x+2y=12(2) 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 解方程组X²-2XY=Y² 9X²-12XY+4Y²=4X²-2XY+Y²=36 9X²-12XY+4Y²=4 （x^2+xy/x-y)/（xy/x-y)计算 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)