Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) If A & B are two square matrices such that `B = – A ^(–1)BA, then (A + B)^2` is equal to - Sarthaks eConnect

If A & B are two square matrices such that `B = – A ^(–1)BA, then (A + B)^2` is equal to

`A^2+B^2`

`A^2+2AB+B^2`

A+B