Dobbiamo considerare entrambe le posizioni.

Dobbiamo comes from the verb dovere, which means to have to, must, or sometimes should, depending on context.

Here it is the 1st person plural form in the present tense:

• io devo = I must / I have to
• tu devi = you must
• lui/lei deve = he/she must
• noi dobbiamo = we must / we have to
• voi dovete = you all must
• loro devono = they must

So dobbiamo means we must or we have to.

Because after a modal verb like dovere, Italian usually uses the second verb in the infinitive.

So:

• dobbiamo considerare = we must consider
• possiamo andare = we can go
• voglio mangiare = I want to eat

You do not say dobbiamo consideriamo.
The correct structure is:

subject + modal verb + infinitive

So in this sentence:

• dobbiamo = we must
• considerare = to consider

Together: we must consider

Because posizioni is a feminine plural noun.

The word entrambi / entrambe means both, and it must agree in gender with the noun:

• entrambi i libri = both books (masculine plural)
• entrambe le posizioni = both positions (feminine plural)

Since posizione is feminine:

• singular: la posizione
• plural: le posizioni

the correct form is entrambe.

In standard Italian, when entrambi/e is used directly before a noun, it normally goes with the definite article:

• entrambi i ragazzi
• entrambe le case
• entrambe le posizioni

So le is there because posizioni is feminine plural, and this is the normal structure.

Think of it as:

• entrambe le posizioni = both the positions

Even though English usually says just both positions, Italian normally keeps the article here.

Literally, posizioni means positions. But in many contexts it can also mean:

• views
• standpoints
• stances
• sides of an argument

So depending on context, entrambe le posizioni might mean:

• both positions
• both viewpoints
• both sides

Italian often uses posizione in a more abstract sense, not only a physical position.

Not always. Dovere can range in meaning depending on context.

In English, it might be translated as:

• we must
• we have to
• we need to
• sometimes even we should

So Dobbiamo considerare entrambe le posizioni could sound like:

• We must consider both positions.
• We have to consider both positions.
• We need to consider both positions.

The exact force depends on tone and situation. In many everyday contexts, we have to or we need to may sound more natural than a very strong we must.

The basic word order is:

Dobbiamo + considerare + entrambe le posizioni

That is:

• modal verb
• infinitive
• direct object

This is a very normal and natural Italian word order.

You could change the order in special contexts for emphasis, but this version is the standard neutral one.

It is the direct object of considerare.

The sentence breaks down like this:

• Dobbiamo = we must
• considerare = consider
• entrambe le posizioni = both positions

So the thing being considered is entrambe le posizioni.

Yes. Tutte e due le posizioni is another very common way to say both positions.

Compare:

• entrambe le posizioni = both positions
• tutte e due le posizioni = both positions

Entrambe is slightly more compact and sometimes a bit more formal or written in tone, while tutte e due is very common in everyday speech.

Yes. It can be used as a pronoun when the noun is already understood.

For example:

• Dobbiamo considerare entrambe. = We must consider both of them.

Here, entrambe stands alone and replaces le posizioni.

But in your sentence, the noun is stated explicitly, so we get:

• entrambe le posizioni

Yes, depending on the nuance you want. For example:

• Dobbiamo valutare entrambe le posizioni. = We must evaluate both positions.
• Dobbiamo esaminare entrambe le posizioni. = We must examine both positions.
• Dobbiamo tenere conto di entrambe le posizioni. = We must take both positions into account.

Considerare is broad and useful. It suggests thinking about or taking into account both sides.

It is neutral and works well in both spoken and written Italian.

Nothing in it is especially informal or especially formal:

• dobbiamo is standard
• considerare is standard
• entrambe le posizioni is standard and natural

So you could hear or use this sentence in:

• conversation
• meetings
• essays
• discussions
• debates

It is a very normal sentence in Italian.