M2 help me rearrange this to this format pls! show that KE loss is...

help please, ive reached this point. and it should be expressed as shown below,u in pencil. how do I go about it? thanks a lot!!!

you have not made a mistake.

now you need to factorise out mu²/2 and simplify the two fractions in the bracket.

thank youuu! haha im still confused tho, sorry, arent we supposed to minus the fractions normally? and the lcm as 2 (m+M)?? I tried and didnt get the answer so idk what to do

simplify 1 - m/{ M + m } in the usual way

Alright, so you can express 1/2 mu^2 as mu^2 /2. Next subtract the 2 fractions as you normally would (hint get the same denominator). Once you have done this the 2 m^2u^2 cancel leaving ya with the required format hope this helps! feel free to msg me if you need further assistance