If \( \alpha \) and \( \beta \) are the roots of the equation \( x^{2}+6 x+\lambda \) \( =0 \) a...

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If \( \alpha \) and \( \beta \) are the roots of the equation \( x^{2}+6 x+\lambda \) \( =0 \) and \( 3 \alpha+2 \beta=-20 \), then \( \lambda= \)
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