The answer is -3.65 because once you divide a negative with a positive the answer will still be negative.
Sorry I don’t know it right now but I can help you with some thing else
Answer:

Step-by-step explanation:
Given

Required
Solve
Open the brackets
= 
= 
Apply law of indices:
= 
= 
= 
Answer:
18
Step-by-step explanation:
The two smaller sides are 15 and the larger one is 18