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Question

Solving abxbax=a2b2 gives x equal to

A
1
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B
a+b
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C
1ab
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D
a2b2
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Solution

The correct option is A 1ab
The given equality can be solved as follows:

abxbax=a2b2(a×ax)(b×bx)(bx)(ax)=a2b2(TakingLCM)a2xb2xabx2=a2b2x(a2b2)abx2=a2b2

x(a2b2)abx2(a2b2)=11abx=1x=1ab

Hence, x=1ab.

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