In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

In mathematics , a power of two is a number of the form 2 where n is an integer , that is , the result of exponentiation with number two as the base and integer n as the exponent .
In mathematics , a power of two is any number which is an integer power of two .

He was the son of Walter Stewart , 6th High Steward of Scotland and of Marjorie Bruce , daughter of the Scottish king Robert the Bruce by his first wife Isabella of Mar .
He was the son of Walter Stewart and Marjorie Bruce .

In countries with a presidential system , such as the United States , the Cabinet does not function as a collective legislative influence ; rather , their primary role is as an official advisory council to the head of government .
In other countries , such as the United States , the cabinet has limited power , and is an advisor to the Head of Government .