Question

m=a2+2ab+b2 and n=-4ab then √m+n=
please answer it fast

Answer 1

Given :-

m = a² + 2ab + b²

n = - 4ab



Solution :-

m + n

=> a² + 2ab + b² - 4ab

=> a² + b² - 2ab

By the converse of identity that is :-

a² - 2ab + b² = ( a - b )²


m + n = ( a - b )²


To find :-


$\sqrt{m + n}$

$= \sqrt{ {(a \: - b)}^{2} }$


$= a - b$


So

Option ( 2 ) is right !!!


@Altaf