Can someone me factor this problem by the grouping method? 50m^3-2n

Hey there!!

50m³ - 2m

This can be written as

( by taking 2m common )

2m ( 25m² - 1 )

N0w, let us take 25m² - 1

This is in the form of a² - b²

This equals = ( a + b ) ( a - b )

( 5m )² - ( 1 )² = ( 5m + 1 ) ( 5m - 1 )

The final answer :

2m { ( 5m + 1 ) ( 5m - 1 ) }

Hope my answer helps!