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Question

For the hyperbola 16x2−9y2+32x+36y−164=0, find 2(a+b).

A
8
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B
6
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C
14
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D
12
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Solution

The correct option is A 14
Given hyperbola can be written as

16x2+32x+169y2+36y36=144
(x+1)29(y2)216=1
a=3,b=4
Length of major axis =2×4=8 and length of minor axis =2×3=6.

Hence sum is 2(a+b)=2(3+4)=14.

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