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Need some clarification please
In this quadratic equation,
a, x squared, plus, b x, plus c equals zero AND a is not equal to zero where:
- a is the coefficient of x squared,
- b is the coefficient of x and
- c is a constant.
Question: When I see the second part of the formula in this quadratic equation, it confuses me a little. My question is this: Is it safe to assume then that I will be looking for an answer that could be < or > than zero. Is that correct?
Thanks for your help.
I don't exactly understand what you mean by the "second part of the formula".
If it is a<>0, then the answer may still be 0, if c = 0.
If it is the formula for the answer in (-b +/- sqrt(b^2-4*a*c))/(2a), then yes, you need not worry about the term within the square root being less than zero. The GRE does not test concepts regarding this special case.
like goldust mentions the root may be -ve... a complex root... but the denominator 2a must not be 0... otherwise the expression is meaningless... however the roots may be 0...
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