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B2 - 4ac > -1 means the root is real. true or false??
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B2 - 4ac > -1 means the root is real. true or false??

User Muhammad Waqas Iqbal
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6 votes
Hello,
For quadratic equation the discriminant must be >=0 in order to have real roots.

That's FALSE. Imagine b²-4ac=-0.5
User Sergey Ronin
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