alleryStart learning →Which quantity is used to determine the number of solutions of a quadratic equation?
AThe leading term
BThe discriminant
CThe coefficient
DThe constant term
Answer & Solution
Correct answer: B. The discriminant
1. One expression tells you how many roots to expect.
2. The quadratic formula contains an expression under the square root.
3. This quantity is called the discriminant.
4. It is used to determine the number of solutions of a quadratic equation.
_Source: OpenStax Elementary Algebra 2e (CC BY 4.0), Ch 10 'Quadratic Equations', sections 10.1-10.5_
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