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Factorise

Asked by 13th June 2008, 12:51 PM
Answered by Expert
Answer:

a2 + 1/a2 + 2 = 0

a4 + 1 + 2a2 = 0

a4 + 2a2 + 1 = 0

let a2 = y

then the equation will be :

y2 + 2y + 1 = 0

y2 + y + y + 1 = 0

y (y+1) +1 (y+1) = 0

(y+1)(y+1) = 0

(a2 +1)(a2 +1) = 0

Answered by Expert 13th June 2008, 5:25 PM
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