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Question
The roots of `ax^2+bx+c=0`,a≠0 are real and unequal, if `(b^2-4ac)` is
(a)>0 (b)=0 (c)<0 (d)none of these
Solution
(a)>0
The roots of the equation are real and unequal when `(b^2-4ac)>0`
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