Question

Factories the following expression (l+m)-(l-m)​

Answer 1

$hello.....$

$(l + m)(l - m) = l {}^{2} - m {}^{2}$

Answer 2

Answer:

I think the question is incomplete!

It will like that-> (l+m)^2 - (l-m)^2

Step-by-step explanation:

First we have to use identity in this

Using identity a^2-b^2=(a+b)(a-b), we get:

[l+m+(l-m)][l+m-(l-m)]

[l+m+l-m][l+m-l+m]

By cutting, we get:

[2l][2m]

2×2(l×m)

4lm Answer