Разложите на множитель выражение ПОМОГИТЕ ПОЖАЛУСТА 1) x(3) – b(2) – ax – ab = 2) 3b + bc + 3ac + 9a = 3) a(2)x(2) – x(6) = 4) a(2)x(2) – y(4) = 5) c(2) – 4c + 4 – 4x(2) = 6) c(2) – 6c + 9 – 4x(2) = 7) 4c(2) – 20c + 25 – 9a(2) = 8) y(2)x + y + yx(2) + 4xy + 4 = 9) 3x(2) + 2x – xy – 2y(2) + y(3) – 3xy(2) = 10) x(2) + x – xy – y(2) + y(3) – xy(3) = 11) a(2)x + a + ax(2) + x +2ax + 2 =

1. x-b-ax-ab=(x-b)x+b)-a(x+b)=(x+b)(x-b-a). 2. 3b+bc+3ac+9a=b(3+c)+3a(3+c)=(3+c)(b+3a). 3. ax-x=x(a-x)=x(a-x)(a+x). 4. ax-y=(ax-y)(ax+y). 5. c-4c+4-4x=(c-4c+4)-(2x)=(c-2)-(2x)=(c-2-2x)(c-2+2x) 6. c-6c+9-4x=(c-6c+9) -(2x)=(c-3)-(2x)=(c-3-2x)(c-3+2x). 7. 4c-20c+25-9a=(4c-2·2·5·c+25)-(3a)=(2c-5)-(3a)= =(2c-5-3a)(2c-5+3a). 8. 9. 3x+2x-xy-2y+y-3xy=(3x-3xy)+(2x-2y)-(xy-y)= =3x(x-y)+2(x-y)-y(x-y)=(x-y)(3x+2-y). 10. x+x-xy-y+y-xy=(x-xy)+(x-y)-(xy-y)= =xy(x-y)+1·(x-y)-y(x-y)= (x-y)(xy+1-y). 11. ax+a+ax+x+2ax+2=(ax+a)+(ax+x)+(2ax+2)= =a(ax+1)+x(ax+1)+2(ax+1)= (ax+1)(a+x+2).