Projectile Question from 2008 HSC (1 Viewer)

[9876543210]

it's question 7 e) from last year's HSC paper.
this is the worked solution for that part.
it says to multiply each term by 2h/gt1t2
but i dont think it's right
because LHS wont equal RHS
someone please help me
thx =)

 

[daryl-d]

Just have a look at Terry Lee's solution on this website it might help


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