Hi,

I'm hoping someone can help me solve the following question: $2^n - n^2 \in \Omega(2^n)$. I've been stuck on it for awhile now and really need some guidance.

Also the expansion of $2^n - n^2 \in \Omega(2^n)$ is $\exists c, n_0 \in \mathbb{R}^+, \forall n \in \mathbb{N}, n \geq n_0 \Rightarrow 2^n - n^2 \geq c \cdot 2^n$

I hope someone can help! And soon!!!