You studied multiplication already in a primary school. The main idea of multiplication is to shorten addition of the same number. It is much easier to read [math] 2+2+2+2+2[/math] in a form [math] 5\cdot 2.[/math] Powers are used to shorten multiplication: [br][br]  [math]\large \underbrace{2\cdot 2\cdot 2\cdot 2\cdot 2\cdot 2}_{\text{there is 6 of 2 multiplied}}=2^6.[/math][br][br][br][u]Task 1[/u]. In which form could you write [math] 2 \cdot 3\cdot2 \cdot 3\cdot2 \cdot 3\cdot2 \cdot 3?[/math] [br][br][u]Task 2[/u]. How about [math] (2^3)^2?[/math]