The sum of p and q means (p+q).
The difference of p and q means (p-q).
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It is: 4*(q+p)
The answer depends on what p and q are meant to represent.
The sum of -p and -q -
Yes, irrational. Let p = root 2 and q = root 3. Then (q - p)2 = 5 - 2root6, which is irrational because it is the sum of an integer (5) and an irrational (2root6), and so q - p (which is root3 - root2) is irrational.
coefficient