It is very simple, if you look carefully there is a common factor
(k+1)(k+2) has been taken as common factor out of the equation that result to (k+1)(k+2) (k/3+1) where "1" is placed to complete the new equation.
0
#ælïæ@🙄 @æñæœ answered this
It is very simple, if you look carefully there is a common factor
(k+1)(k+2) has been taken as common factor out of the equation that result to (k+1)(k+2) (k/3+1) where "1" is placed to complete the new equation.......