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i just want to confirm if my answer is right....

this is the problem:

solve the expression for n Є N

P(2n + 4, 3) = 2/3P(n+4, 4)

this is my work:

(2n +4)!/((2n +4)-3)!) = (2/3(n+4)!)/((n+4)!)-4)!)

(2n +4)!/((2n +1)! )= (2/3(n+4)!)/(n!)

and i dont know wat to do next... should i just cross multiply it?

this is the problem:

solve the expression for n Є N

P(2n + 4, 3) = 2/3P(n+4, 4)

this is my work:

(2n +4)!/((2n +4)-3)!) = (2/3(n+4)!)/((n+4)!)-4)!)

(2n +4)!/((2n +1)! )= (2/3(n+4)!)/(n!)

and i dont know wat to do next... should i just cross multiply it?

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