Hi guys i need help with these simultaneous equations

[frail ingot]

Try to factorize both statements, that should give enough information.
For a^n-b^n = (a-b)(a^(n-1)-a^(n-2)b^1+...+(-1)^(n-1) b^(n-1))
When n is odd.

[vivid burrow]

!showwork

[devout dagger]

Show your work, and if possible, explain where you are stuck.