因式分解30题(初二級)(要过程)
问题描述：
因式分解30题(初二級)(要过程)
27分之1a^3+3分之1a^2+a+1 x^6-3x^4y+3x^2y^2-y^3 a^2-2ab+ac-2bc 2ax-10ay+5by-bx x^3-xyz+x^2y-x^2z 3x^2+15xy-yx-5y^2 a^3+3a^2+3a+9 15x+6xy-4y-10 4x^2-4xy+y^2-1 x^2-16y^2+x+4y x^3+3x^2-4x-12 a^4+2a^3+2a^2+1 (x^2+y^2-1)^2-4x^2y^2 x^2-2xy+y^2-4x+xy+4 x^2-3x-4 x^2-10x+24 a^2-a-6 a^2-11a+28 x^6+7x^3-8 a^2b^2-16ab+15 a^4-7a^2-18 -x^2-2xy+15y^2 (x-y)^2+(x-y)-42 (x^2-x)^2+6(x^2-x)-16 (a-3b)^2-(3b-a)20 15x^2-22x-5 6x^2-11xy-35y^2 6x^2-25x+4 24x^3-64x^2-24x
答
27分之1a^3+3分之1a^2+a+1 =(27分之1a^3+1)+(3分之1a^2+a) =(3分之1a+1)(9分之1a^2-3分之1a+1)+a(3分之1a+1) =(3分之1a+1)(9分之1a^2+3分之2a+1) x^6-3x^4y+3x^2y^2-y^3 =(x^6-y^3)-3x^2y(x^2-y) =(x^2-y)(x^4+x^2y+...