The roots of $a x^{2}+b x+c=0, a \neq 0$ are real and unequal, if $\left(b^{2}-4 a c\right)$
(a) > 0(b) = 0(c) < 0(d) none of these
(a) > 0
The roots of the equation are real and unequal when $\left(b^{2}-4 a c\right)>0$.
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