That the teacher gave you extra credit
Hello there!
11⁶/11²=11/⁴ because when we divide numbers with the same base, we subtract the powers.
11⁴*11⁵=11⁹ because we add the powers when multiplying numbers with the same base.
I hope this helps you!
~Just an emotional teen who listens to her favorite songs

Answer:
x = 8
Step-by-step explanation
Complimentary angles have a sum of 90*. Thus when adding the two equations together, we must get 90*.
7x + 17 + 3x - 7 = 90 Combine like terms
10x + 10 = 90 Subtract 10 on both sides
10x = 80 Divide both sides by 10
x = 8
You subtract the numerator from the exponent and you then answer it as a regular exponent. Hope this helps and its not to confusing have a great day and tell me if you need me to clarify this a little more :)