n2 + n = n(n + 1)
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2n2 / n = 2n
n squared minus six.
The problem cannot be solved because there is no equation (or inequality) in the question: only three disjoint terms.
The power of a quotient is the quotient of the power! (a/b)^n = (a^n) / (b^n) where a/b is the quotient and n is the power.
12 to the second power is 144...2 to the second power is 4, any # to the second power is the # times itself.