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If (a + bx)^-2 =1/4-3x+..., then (a, b)...

If `(a + bx)^-2 =1/4-3x+...,` then `(a, b) =`

A

(2,12)

B

`(-2,12)`

C

`(2,-12)`

D

None of these

Text Solution

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The correct Answer is:
A
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