Answer:
1/7^2
Step-by-step explanation:
The applicable rules of exponents are ...
(a^b)(a^c) = a^(b+c)
a^-b = 1/a^b
__
Then your expression simplifies to ...

Steve didn't put the parenthesis when he went to the second part of the equation, instead of putting the parenthesis he skipped them and keep going along with the equation.
I don't know if you needed this but the answer to the math problem would be
Answer: 2 x
It is 20 because the 5 is in the ones place so the 2 has to be in the 10 place which makes it 20
Bracelet
There are 2 bracelets and she possibly picks three. :)
Please provide a square, thank you !!!