One thing I learned this week in math 10 is when you have a question that requires you to do the power law, multiplication law and the division law, it doesn’t matter which you start with, you just have to do it right.
In this preticular question I chose to do the power law first to get rid of the exponent on the outside of the first bracket. I find if you always do the the power law first you’re more likely to do the question without any mistakes. When you do the power law you multiply the exponents as well as the exponent with the coefficient.
Next I chose to do the division law, meaning you subtract the exponents but you always leave the coefficients because the small numbers don’t associate with the big numbers.
Finally I did the multiplication law, to combine the same variables and add the exponents and multiply the whole numbers. Again never combining them together.