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Question

If a - 14, a - 2, a + 34 are in G.P, find the value of a.

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Solution

(a2)2 = (a - 14) (a + 34)

  a2 - 4a + 4 =  a2 + 20a - (14 × 34)

24a = (14 × 34) + 4

a =  48024

    = 20


Mathematics

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