Question

求助，奖励100 ！！！！！！！要过程重点要过程没有的可以不写，只要求上面5个小题的因式分解！！谢谢

Answer 1

(1)-6x^2+12x-6
=-6(x^2-2x+1)
=-6(x-1)^2

(2)x^2-xy+x
=x(x-y+1)

(3)9x^3y^3-21x^3y^2+12x^2y^2
=3x^2y^2(3xy-7x+4)

(4)x^2(x-y)+y^2(y-x)
=x^2(x-y)-y62(x-y)
=(x-y)(x^2-y^2)
=(x-y)(x-y)(x+y)
=(x-y)^2*(x+y)

(5)a^2(a-b)+2ab(a-b)+b^2(a-b)
=(a-b)(a^2+2ab+b^2)
=(a-b)(a+b)^2