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Ifx^2-(a-3)x+a=0 has at least one positi...

If`x^2-(a-3)x+a`=0 has at least one positive root,then

A

`ain(-infty,0)cup[7,9]`

B

`ain(-infty,0)cup[7,9)`

C

`ain(-infty,0)cup[9,infty]`

D

none of these

Text Solution

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The correct Answer is:
C
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PATHFINDER-QUADRATIC EQUATION AND EXPRESSION-QUESTION BANK
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