X + (x + 10) +2 (x + 10)

The expression you've provided is:

x + (x + 10) + 2(x + 10)

To simplify this expression, you can distribute and combine like terms.

First, expand the expression:

x + (x + 10) + 2(x + 10)

= x + x + 10 + 2x + 20

Now combine like terms (terms with x and constant terms):

(1x + 1x + 2x) + (10 + 20)

= 4x + 30

So, the simplified form of the given expression is:

4x + 30