Final Exam Review

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Simplify: (5x – 2i) + (–7x + 8i)

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–2x + 6i

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Find f(x) + g(x) when f(x) = 9 - 3x and g(x) = 5x - 7

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2x + 2

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0

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Definition: Polynomial

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A mathematical expression involving a sum of powers in one or more variables multiplied by coefficients.

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Definition: Zero of a function

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A value of x for which the function f(x) = 0.

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Definition: Multiplicity of a zero

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The number of times a particular zero is repeated in a polynomial.

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Definition: Rational function

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A function that can be expressed as the quotient of two polynomials.

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Definition: Complex number

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A number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit.