Question

(l+m)² - (l-m)² factorise​

Answer 1

Answer:

I know the answer to this question

Answer 2

Answer :

= 4m

Explanation :

$= (1+m)^2-(1-m)^2\\= (1+2m+m^{2} ) - (1-2m+m^{2} )\\= 1 + 2m + m^{2} - 1 + 2m - m^{2} \\= 2m + 2m \\= 4m$

Please mark as brainliest