A student asked me whether I would write the following sentence:
Nonetheless, the extremely central issue is whether the significance of this pivotal factor is totally sufficient for convincing us to provide a closed-form formula or not.
My answer is no! Examiners hate this kind of sentence. It just seems to be a list of big words that have been thrown together; it's completely unnatural, and contains almost no real meaning.
Please don't learn sentences like this. Just write in a clear, direct way, and focus on answering the question.