Question

A) If x=7a-b (7 power a-b) and y = 7b-, show that xy = 1.

b) If a = 2 and b = 1, show that (a + b)² = a² + 2ab + b²

c) If a = 5 and b = 3, show that (a - b)² = a² - 2ab + b²

Please help me solve this. Thank you​

Answer 1

I need help for my question pls

Answer 2

You have seemed to put a lot of numbers together, maybe if you put the question into more of a proper way, I might be able to be of more help.

Explanation:

I hope this helps, if it doesn't then just message me and ill be more than happy to help :)