5)
If the roots of the quadratic equation coc? + bx+c=0 are real and equal, then
(A) 62 - 4ac = 0 (B) b2 - 4ac < 0 (C) b2 - 4ac > 0 (D) None
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if the roots r equal then ,
D = 0
•°• b²-4ac = 0
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