Radicals, Complex Numbers, Rational Expressions Take-Home Flashcard

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What is a rational expression?

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A rational expression is a fraction where the numerator and the denominator are both polynomials.

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How do you determine when a rational expression is undefined?

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A rational expression is undefined when its denominator equals zero.

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What is the quadratic formula?

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What are complex numbers?

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What is the definition of a polynomial?

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A polynomial is an expression consisting of variables raised to non-negative integer powers and coefficients.

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How do you evaluate a polynomial at a given value?

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To evaluate a polynomial at a value, substitute the value for the variable and simplify.

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What is the discriminant of a quadratic equation?

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