Answer:
Option 2 , 4 & 5 are true.
Explanation:
● Option 2 is equivalent to a² + b² = c².
● Option 4 & 5 can be found by :-
- Substracting a² from both the L.H.S. & R.H.S. (It will match with Option 4)
- Or substracting b² from both the L.H.S & R.H.S. (It will match with Option 5)