Tìm x: 6(x - 3)(x - 4) - 6x(x - 2) = 4; - (x+ 3)(x - 4)+ (x - 1)(x+ 1) = 10; (2x - 1)(x - 2) - (x+ 3)(2x - 7) = 3

1. 6(x - 3)(x - 4) - 6x(x - 2) = 4
2. - (x+ 3)(x - 4)+ (x - 1)(x+ 1) = 10
3. (2x - 1)(x - 2) - (x+ 3)(2x - 7) = 3
4. (x - 5)( - x+ 4) - (x - 1)(x+ 3) = - 2x^2
5. (4x+ 1)(x - 3) - (x - 7)(4x - 1) = 15
6. (x+ 1)(x^2 - x+ 1) - x)(x^2 - 3) = 4
7. (x - 3)(x^2+ 3x+ 9)+ x(5 - x^2) = 6x
8. (4x - 5)(x+ 1) - 4(x - 1)(x+ 1)=7
9. 5(x - 3)(x - 7) - (5x+ 1)(x - 2)=8
10. 3(x - 7)(x+ 7) - (x - 1)(3x+ 2) = 13