1.

If the equation x^2-a_1x+b_1=0 and. x^2-a_2x+b_2=0, have one root in common and the second equation has equal roots, then which one of the following is a valid relation?

Answer»

`2(b_1-b_2)=a_1a_2`
`a_2(a_1+a_2)= b_1b_2`
`2(a_1-a_2)=b_1b_2`
`2(b_1+b_2)=a_1a_2`

ANSWER :D


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