هذه النتيجة محتملة.

Because النتيجة is a feminine noun in Arabic, and the demonstrative must agree with it.

• هذا = this for masculine nouns
• هذه = this for feminine nouns

So:

• هذا الكتاب = this book
• هذه النتيجة = this result

Even though result is not biologically female, Arabic nouns still have grammatical gender.

النتيجة is grammatically feminine. One strong clue is the ending ـة (taa marbuuTa), which often marks feminine nouns.

A learner-friendly rule:

• nouns ending in ـة are very often feminine
• adjectives and demonstratives must then match that feminine gender

So once you know النتيجة is feminine, it makes sense that the sentence uses:

• هذه
• محتملة

both in the feminine form.

Because it is describing النتيجة, and Arabic adjectives must agree with the noun they describe in:

• gender
• number
• definiteness, when they are attributive adjectives

Here, محتملة is feminine singular to match النتيجة.

Compare:

• نتيجة محتملة = a possible/probable result
• احتمال محتمل would be masculine, because احتمال is masculine

The masculine form is محتمل.
The feminine form is محتملة.

In Arabic, the present-tense verb to be is usually not stated in simple sentences like this.

So:

• هذه النتيجة محتملة literally looks like this result possible
• but it means This result is possible / probable

This is completely normal in Arabic.

If you wanted a past tense, Arabic would use a verb such as كان:

• كانت هذه النتيجة محتملة = This result was possible/probable

Because here it is the predicate of the sentence, not an adjective inside a noun phrase.

So:

• هذه النتيجة محتملة = This result is possible/probable

But if you say:

• هذه النتيجة المحتملة

that means:

• this possible/probable result

That is a noun phrase, not a full sentence by itself in the same way.

A useful contrast:

• النتيجة محتملة = The result is possible/probable
• النتيجة المحتملة = the possible/probable result

For a learner, the easiest way to think of it is: it works like an adjectival predicate.

In other words, it tells you something about the subject:

• هذه النتيجة = this result
• محتملة = is possible/probable

Traditional Arabic grammar would analyze this as part of a nominal sentence with a خبر (predicate). So it is not just an adjective attached to the noun in the same way as in النتيجة المحتملة.

Not exactly. Because ن is a sun letter, the ل in الـ is assimilated in pronunciation.

So النتيجة is pronounced roughly:

• an-natījah / an-natīja

not:

• al-natīja

In the full sentence, you will often hear something close to:

• hādhihi n-natīja muḥtamala

The spelling still keeps الـ, but the pronunciation changes.

In this sentence, it is muḥtamala.

That matters, because Arabic script without short vowels can leave some ambiguity for learners. Here the intended word is the form meaning possible/probable, pronounced:

• muḥtamala (feminine)
• masculine: muḥtamal

So the full sentence can be pronounced approximately:

• hādhihi n-natīja muḥtamala

In fully vocalized, careful Modern Standard Arabic, you could write:

• هٰذِهِ النَّتِيجَةُ مُحْتَمَلَةٌ

The important points are:

• هذه is indeclinable in form
• النتيجةُ is nominative
• محتملةٌ is also nominative, because it is the predicate of the nominal sentence

In normal modern writing and most speech, those final case endings are usually not pronounced.

Yes. It is a nominal sentence because it begins with a noun-like element, not a verb.

A simple learner breakdown is:

• هذه النتيجة = the subject/topic
• محتملة = the predicate/comment

More traditional grammar would say:

• هذه is the مبتدأ
• النتيجة is closely linked to it as an explanatory noun/apposition
• محتملة is the خبر

But at an early stage, it is enough to understand it as:

• This result
  • is possible/probable

Yes, but the meaning shifts slightly.

• هذه النتيجة محتملة = This result is possible/probable.
• هذه نتيجة محتملة = This is a possible/probable result. / This is one possible result.

The difference is mainly the presence or absence of الـ on نتيجة:

• النتيجة = the result
• نتيجة = a result

So the version with الـ points to a specific known result, while the version without it sounds more general or classificatory.

They are close, but not always identical in nuance.

• ممكنة often means possible in a broad, neutral sense
• محتملة can suggest possible, probable, or plausible, depending on context

So محتملة may sometimes feel a little closer to likely or conceivable, not just theoretically possible.

In many everyday contexts, though, the two can overlap enough that either may work.