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If a^x=b^y=c^z and b^2=a c , then show t...

If `a^x=b^y=c^z` and `b^2=a c ,` then show that `y=(2z x)/(z+x)`

A

`(xy)/(x +z)`

B

`(xy)/(2 (x - z))`

C

`(xz)/( 2 (z - x))`

D

`(2xz)/( x +z)`

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The correct Answer is:
D
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