Question

4. (m + n)2 - ( m - n)2 = ?​

Answer 1

Answer:

4mn ans

Step-by-step explanation:

m^2+2mn+n^2=m^2-2mn+n^2

m^2and m^2 cut

n^2 and n^2 also cut

2mn+2mn

4mn

Answer 2

4n is the answer :

first multiply the equation

(2m+2n)-(2m-2n) =

2m+2n-2m+2n =

0m+4n

here we multiply the 2m-2n with ( - )

then it will becomes -2m+2n

so answer is

4n