Decide if the "personal a" is necessary in the following sentence.
Tengo
dos amigos.
The "personal a" is necessary.
The "personal a" is not necessary.

it is not necessary

Explanation:

my first language is Spanish

 The "personal a" is not necessary.

Tengo dos amigos.

Translation: I have two friends.

Explanation: The "personal a" is a preposition that we use when the direct object of a sentence is a person.

But there are exceptions to the "personal a" usage rule:  

When using the verbs "tener" or "haber" we don't use the "personal a".

In this case we are using the verb "tener" (tengo), so "the personal a" is not necessary.