A(x)+x^2+5x+6

You probably meant to write

a(x) = x^2 + 5x + 6

What are you supposed to do with it?

(x+5) (x+1); x= -5, -1

The expression you provided, A(x) + x^2 + 5x + 6, represents a polynomial. To evaluate this expression, you will need more information about the function A(x). The value of A(x) will determine the specific value of the expression.

If you have the value of A(x), you can substitute it into the expression and simplify. For example, if A(x) = 2, the expression would become:

2 + x^2 + 5x + 6

To find the value of the whole expression, you can follow these steps:

1. Replace A(x) with the given value, or any specific value you want to evaluate.
2. Simplify the expression by combining like terms.
3. Simplify further if possible by applying any rules of exponentiation.

If you have a specific value for A(x), please provide it so that I can help you further.