24. Januar 2017

"We all use math every day; to predict weather, to tell time, to handle money. Math is more than formulas or equations; it's logic, it's rationality, it's using your mind to solve the biggest mysteries we know."

24. Januar 2017

5 Aufgaben

24. Januar 2017

1. (3+5)² = 2. (9-2)² = 3. (8+3)² =