completing the square | Finding the third term of a perfect square trinomial when given the first two.
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composition of functions | A function formed by using the output of one function as the input of a second function.
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discriminant | The discriminant is the expression found under the radical sign in the quadratic formula.
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quadratic equation | An equation that can be written in the form ax2 + bx + c = 0, where a is not equal to 0.
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quadratic formula | The formula that can be used to solve a quadratic equation. (1.0K)
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quadratic function | A function of the form f(x) = ax2 + bx + c when a ≠ 0.
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quadratic in form | An equation that is quadratic after a substitution.
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quadratic inequality | An inequality of the form ax2 + bx + c ≤ 0 (or with any of the other inequality symbols) where a ≠ 0.
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sign array | A matrix of plus and minus signs used in computing a determinant.
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sign graph | A number line showing the signs of factors.
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test point | A number that is used to check if an inequality is satisfied.
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