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Maths Puzzle
Numerical Ability
i need help with graphic
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21000=12000(1+r/4)^36 solve for r
t^2-24-10t
(t+?)(t-?)
I have tried -10,1..-1,10..2,-5......5,-2...... I believe this is prime.
would you jsut check behind me please?
Thank you Dianne