Question

formula of a²+b². please answer me​

Answer 1

Answer:

There are two formulae

$a {}^{2} + b {}^{2} = (a + b) {}^{2} - 2ab$

$a {}^{2} + b {}^{2} = (a - b) {}^{2} + 2ab$

Answer 2

Answer: (a+b)²-2ab

Step-by-step explanation: