4+12(x-y)+9(a-y)^2

4+12(x-y)+9(a-y)^2 4(x+y)^2-12(x+y)(x-y)+9(+y)^2因式分解, (2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y) 12ab^2(y-x)+9b^3(x-y)+4a^2b(x-y)因式分解 因式分解：4a^2(x-y)+9(y-x) -4x^2y^2+x^3y+4xy^3 因式分解：4a^2(x-y)+9(y-x) -4x^2y^2+x^3y+4xy^3 几道初二的因式分解,急用的.(a-b)(x-y)-(b-a)(x+y).(a-b)(a^2+9)-6x(b-a)x^2(x-y)+(y-x)(x^2-y^2)^2-8(x^2+y^2)4+12(x-y)+9(x-y)^2 a(x+y)^2+4a-4a(x+y) 因式分解(x+y)^2y^2-12(x+y)y^2+36y^2-y^4 1 x²y-3xy²2 2x(2x-y)+y(y-2x)3 -6x(m-2n)+12(2n-m)4 3(y-x)²-(x-y)³5 4a²-366 (x-2y)²-x²7 4x³y+4x²y²+xy³8 (x+y)²-2m(x+y)+m²9 x²-9x+1810 -8x²-10x-3 (1)x^2*x^8+x^13/x^3 (2)a^19/a^12/a^3 (3) (x-2y)^5/(2y-x)^3 (4)(x-y)^5/(x-y) (5)(x-y)^6/(y-x)^4 分解因式(1) 25X^2-16Y^2 (2) (A-B)(X-Y)-(B-A)(X+Y） （3）A^2-4AB+4B^2 (4)4+12(X-Y)+9（X-Y)^2 分解因式,25x^2-16y^3；（a-b)(x-y)(b-a)(x+y);a^2-4ab+4b^2;4+12(x-y)+9(x-y)^2 已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值 因式分解：a(x-y)^2+b(y-x)^3 4(x-y)^2+8(y-x)(x+y)1.a(x-y)^2+b(y-x)^3 2.4(x-y)^2+8(y-x)(x+y) 将多项式X^2-4Y^2-9Z^2-12YZ分解成因式的积,结果是A.(x+2y-3z)(x-2y-3z)B.(x-2y-3z)(x-2y+3z)C.(x+2y+3z)(x+2y-3z)D.(x+2y+3z)(x-2y-3z) 4+12(x-y)+9(x-y)^ 9(x-y)-12(y-x)^2