Question

isn't it + 2ab??? as (a+b)^2 = a^2 + 2ab + b^2​

Answer 1

Step-by-step explanation:

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

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

$= a^{2} + b^{2}$

Hence,

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

Answer 2

Answer:

yes you are correct.