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If-a-2-a-5-Find-a-b-a-1-b-a-2-b-a-b-

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Question Number 202297 by hardmath last updated on 24/Dec/23
If a^2 + a = 5 Find ((a^(−b) + a^(1−b) + a^(2−b) )/a^(−b) ) = ?
Ifa2+a=5Finda−b+a1−b+a2−ba−b=?
Answered by MATHEMATICSAM last updated on 24/Dec/23
((a^(−b ) + a^(1 − b) + a^(2 − b) )/a^(−b) ) = ((a^(−b) (1 + a + a^2 ))/a^(− b) ) = a^2 + a + 1 = 5 + 1 [∵ a^2 + a = 5] = 6
a−b+a1−b+a2−ba−b=a−b(1+a+a2)a−b=a2+a+1=5+1[∵a2+a=5]=6
Answered by Rasheed.Sindhi last updated on 24/Dec/23
((a^(−b) + a^(1−b) + a^(2−b) )/a^(−b) ) =1+a+a^2 =1+5=6
a−b+a1−b+a2−ba−b=1+a+a2=1+5=6

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