35K views · 194 reactions | Most people mistake happiness with positive optimism — Here's why it's important to understand the difference. If you want to dig deeper into these concepts, you can watch the full talk on Youtube: https://youtu.be/TlJgsdjiucQ | Vishen | Facebook

Gauthmath helps with your math. Welcome to Gauthmath! What is the result of (a b)(a-b)? It's a²-b² i.e. the difference of two squares. Let's take a look at this expression (9 1)(9-1). We could get the result 9²-1² based on the pattern (a b)(a-b)=a²-b². Then, how to solve a question like this? (9 1)(9² 1)(9⁴ 1)(9⁸ 1) Let's find the answer in snowball effect! | Gauth