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If
divides then what condition must there be?Using the factor theorem I get
, which is what the answer says.But doesn't there have to be ANOTHER restriction for this to be true?
i.e.
So then doesn't
OR is this second restriction Not necessary???
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What is c? If c can be complex as well as real, then there is no need for any condition on a and b. The condition
is only for required for c to be real.Offline
We haven't learnt complex numbers yet so I assume c is real.
Thanks Jane
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Given that a quadratic has a single real root, it must be that there are two real roots, counting a repeated root as two roots. That is the equivalent of your statement.
"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."
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