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Let x(1) and x(2) be the roots of the eq...

Let `x_(1)` and `x_(2)` be the roots of the eqiation `x^(2)-3x+A=0` and let `x_(3)` and `x_(4)` be the roots of the equation `x^(2)-12x+B=0`. It is known that the numbers `x_(1),x_(2),x_(3),x_(4)` (in that order ) from an increasing GP. Find A and B.

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