Question

How can I write repeated multiplication using powers ?

Answer 1

You can put the number you are repeating and then above it put how many times you are repeating it.

Answer 2

$\underbrace{a\cdot a\cdot a\cdot a\cdot ...\cdot a}_{n}=a^n\\\\Examples:\\\\\underbrace{2\cdot2\cdot2\cdot2}_{4}=2^4\\\\\underbrace{3\cdot3\cdot3\cdot3\cdot3\cdot3\cdot3\cdot3\cdot3\cdot3}_{10}=3^{10}$