Đáp án:
Giải thích các bước giải:
`a, x^3 + 3x^2 - 10x - 24`
`= (x+4)(x^2-x-6)`
`= (x+4)[(x^2-3x)+(2x-6)]`
`= (x+4)[x(x-2) + 2(x-3)]`
`= (x+4)(x-3)(x+2)`
`b, 2x^3 - 11x^2 + 10x + 8`
`= (x-4)(2x^2-3x-2)`
`= (x-4)[(2x^2-4x)+(x-2)]`
`= (x-4)[2x(x-2)+x-2]`
`= (x-4)[(x-2)(2x+1)]`
`= (x-4)(x-2)(2x+1)`
`c, x^3 + 6x^2 + 11x + 6`
`= (x+3)(x^2+3x+2)`
`= (x+3)[(x^2+x)+(2x+2)]`
`= (x+3)[x(x+1)+2(x+1)]`
`= (x+3)(x+1)(x+2)`
`d, x^3 - 5x^2 - 2x + 24`
`= (x-4)(x^2-x-6)`
`= (x-4)[(x^2-3x)+(2x-6)]`
`= (x-4)[x(x-3)+2(x-3)]`
`= (x-4)(x-3)(x+2)`