00:00 Choose the correct solutions
00:03 According to laws of exponents, multiplication of powers with equal base (A)
00:07 equals the same base raised to the sum of exponents (N+M)
00:11 Let's use this formula and check if this solution is correct
00:16 We'll sum and see that the powers are not equal, therefore it's incorrect
00:23 Let's solve the remaining items using the same method
00:30 We can see that this solution is also incorrect
00:38 Let's continue to the last item
00:43 This one also doesn't fit, therefore none of the expressions are correct
00:47 And this is the solution to the question