Question

(1+m)² - (1-m)² factories​

Answer 1

Step-by-step explanation:

(1+m)²-(1-m)²

=(1²+2*1*m+m²)-(1²-2*1*m+m²)

* is sign of multiplication

= 1+2m+m²-1+2m-m²

=4m

4m is factor of given Identity

Answer 2

Answer:

4m

Step-by-step explanation:

(1 + m)² - (1 - m)²

identity____[ a² - b² = ( a+b ) ( a-b) ]

{ taking a² = ( 1 + m )² ; b² = ( 1 - m )² }

[ (1+m) + (1-m) ] [ (1+m) - 1-m) ]

____changing signs in the bracket

[ 2]  [ 1 + m - 1 + m ]

[ 2 ] [ 2m ]

⇒ 4m