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If the equation x^(2)+ax+b=0 and x^(2)+c...

If the equation `x^(2)+ax+b=0 and x^(2)+cx+d=0` have a common root and the first equation has equal roots, then prove that `2(b+d)=ac.`

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The correct Answer is:
`rArr 2(b+d)=ac`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-QUADRATIC EXPRESSIONS-TEXTUAL EXERCISES
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