You have done splendidly!
If a value a has the factors b and c then the product of the factors is just bc. You have written the quadratics as the product of their factors.
The task: Factor the trinomials and write each as the product of its factors.
x^2 -10x -24
x^2 -9x +18
x^2 +14x +45
x^2 +6x -40
Do I have the right answers? What is meant by "write each as the product of its factors"???