Oh, dude, adding n squared plus n squared is like adding apples to apples, you know? It's just like, you take two n squared terms and you add them together to get 2n squared. It's not rocket science, man. Just double up those n squares and you're good to go.
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That factors to (2n + 1)(n + 2)
104
n squared x n n x n x n = n cubed n x n = n squared n squared x n = n cubed
n2+n3=n5 it's simple 8th grade pre-algebra
x2 + 9x2 = 10x2