English, asked by dhina25112000, 1 year ago

(n+2) P4 = 42 X nP2, find n.

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Answered by idk10

9

P is eliminated

(n+2)4=42x2n

4n+8=84n

8=84n-4n

8=80n

8/80=n

n=1/10

Answered by sanjai15102005

4

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