Ineed to know how to do the answer and why that’s the anwer

Ok so the answer is


so we multiply numbers that have the same variable


multiply 2 x 2


then multiply the exponents


multipling like this will look like addition.

so in other words you could do it like this too

now add the exponent with 4


now for the last part

because -3 and 3 added together make 0

I hope this help(it looks complicated but it's very easy and I hope I helped you out)

Ibelieve 4mn because it’s like you’re combining them