## function

$f(n) \in O(g(n))$ if there is a constant $C$ such that for all $n1 \geq n2$ $f(n) \leq Cg(n)$

Verify that belongs

A) $8n^2 -3n +2 \in O(n^2)$

B) $5n-3 \in O(n^2)$