Question

Want to ask how to do it . n some concepts I don't understand for example

Answer 1

`3^2=3\cdot3=9\\(3)^2=(3)\cdot(3)=9\\3^2=(3)^2\\\\but\ (-3)^2=(-3)\cdot(-3)=9\ and\ -3^2=-3\cdot3=-9\to(-3)^2\\eq-3^2`



`(15^m)/(3^n)=((5\cdot3)^m)/(3^n)=(5^m\cdot3^m)/(3^n)=5^m\cdot3^(m-n)`