CBSE Class 9 Answered
Factorise
Asked by | 13 Jun, 2008, 12:51: PM
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 | 13 Jun, 2008, 05:25: PM
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