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Published byTabitha Jennings Modified over 6 years ago
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Warm Up Factor the following expressions completely: 14a2 + 7a y2 + 7y + 12 x4 – 81
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Unit 5 - Day 1 Simplifying Rational Expressions
Objective: SWBAT simplify a rational expression.
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What is a rational number?
Review What is a rational number? (Feel free to ask google) Examples:
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A fraction in which the numerator and/or denominator are polynomials.
Rational Expressions A fraction in which the numerator and/or denominator are polynomials. Examples: * * * Note: Denominators cannot be zero. * * *
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How do we simplify a rational expression?
Review How do we simplify a rational expression? Example:
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Simplifying Rational Expressions Example:
Factor the numerator and denominator: Divide by the common factor:
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Excluded Values Since division by zero is undefined, we must exclude any values of x that cause the denominator to equal zero. In the last example: Therefore, the excluded values are:
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Simplifying Rational Expressions Example:
Factor the numerator and denominator: Divide by the common factor: Excluded Values:
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Classwork: Factoring practice Packet pg. 2 - 3 Simplifying practice
~Odds only~ Homework: Finish pg
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