factorizacion

1) 3x^3-6x^2-x+2
(3x^3+6x^2)-(x+2)
3x^2(x-2)-(x+2)
(x-2)(3x^2-1)

2) 2x^3+2x^2+3x+3
(2x^+2x^2)+(3x+3)
2x^2(x+1)+3(x+1)
(x+1)(2x^2+3)

3) 7x^3+14x^2+49x
7x(x^2+2x-7)

4) 6x+48
6(x+8)

5) 3x+7y-12x^2-28xy
(3x+7y)-(12x^2-28xy)
1(3x+7y)-4x(3x-7y)
(3x+7y)(1-4x)

6) 6x^4-4x^2+2x^2-3
(6x^4-4x^2)+(2x^2-3)
2x^2(3x^2-2)+(2x^2-3)

7) 6x^3-9x^2-2x+3
(6x^3-9x^2)-(2x+3)
3x^2(2x+3)-(2x+3)
(2x+3)(3x^2-1)

8)3x^6-6x^5+12x^4+27x^2
3x^2(x^4-2x^3+4x^2+9)

9)-3y+21
3(-y+7)

10)5x(x+6)+6x(x+6)
(x+6)(5x+6y)