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The solution of the equation : (3+2 sqrt...

The solution of the equation : `(3+2 sqrt2)^(x^2-8)+ (3+2 sqrt2)^(8-x^2)=6` are:

A

`3+-2 sqrt2`

B

`+-1`

C

`+-3 sqrt3, +-2 sqrt2`

D

`+-3, +- sqrt7`.

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  7. If x+iy= sqrt(((a+ib))/((c+id))), then x^2+y^2 equals :

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  8. The solution of the equation |z|-z=1+2i is :

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