Use synthetic division to show that x is a solution of the third-degree polynomial equation, and use

Question:

Use synthetic division to show that x is a solution of the third-degree polynomial equation, and use the result to factor the polynomial completely. List all real solutions of the equation.
1. x3 + 6x2 + 11x + 6 = 0, x = − 3
2. x3 − 52x − 96 = 0, x = − 6
3. 2x3 − 15x2 + 27x − 10 = 0, x = ½