Question

How do you simplify `(3+a^2+2a) + (a^2 - 8a +5)`?

Answer 1

The value of this expression is: `2a^2-6a+8`

Explanation:

`(3+a^2+2a)+(a^2-8a+5)=3+a^2+2a+a^2-8a+5=8+2a^2-6a=2a^2-6a+8`

If there is a + sign in front of an expression in brackets (or there are no sighns), you can skip the brackets without changing the expression.