P If the quadratic equations \( 3 x^{2}+a x+1=0 \& 2 x^{2}+b x+1=0 ...

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If the quadratic equations \( 3 x^{2}+a x+1=0 \& 2 x^{2}+b x+1=0 \) have a common root, then the value of the
W expression \( 5 a b-2 a^{2}-3 b^{2} \) is
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