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CBSE Class 9 Answered

Find the value of a if (x + a) is a factor of x4 -a2x2 + 3x -a.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Let f(x) = x4-a2x2+3x-a

(x+a) is a factor of f (x)

f (-a) = 0

(-a)4-a2(-a)2+3(-a)-a = 0

a4-a4-3a-a = 0

-4a = 0

a = 0

Answered by | 04 Jun, 2014, 03:23: PM
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