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Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Sections 5.1 and 5.2 Exponents ﴾We are not doing Scientific Notation﴿ Objectives: • Use the product rule for exponents • Evaluate expressions raised to the zero power • Use the quotient rule for exponents • Evaluate expressions raised to the negative nth power • Use the power rule for exponents • Use exponent rules to and definitions to simplify exponential expressions 1 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Exponents: Exponents: a shorthand way of writing... x is the and 4 is the It means: 2 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Exponents: Product rule for exponents: If m and n are positive integers and a is a real number, then: Or: To multiply two powers with the same base, add their exponents. 3 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 The Product Rule for Exponents: Product rule for exponents: If m and n are positive integers and a is a real number, then: Only simplify one thing at a time—and show every step. You’ll make fewer mistakes. 4 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Exponents: Power Rules for Exponents: If a and b are real numbers and m and n are integers, then: Power rule Power of a product Power of a quotient Or: To raise a power to a power, multiply the exponents. To raise a product/quotient to a power, distribute the exponents. 5 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 The Power Rule for Exponents: Power Rule for Exponents: If a and b are real numbers and m and n are integers, then: Remember: Only simplify one thing at a time—and show every step. You’ll make fewer mistakes. 6 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Exponents: Quotient Rule for Exponents: If a is a nonzero real number and m and n are both integers, then: Or: To divide powers with the same base, subtract the exponent in the denominator from the exponent in the numerator. 7 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 The Quotient Rule for Exponents: Quotient Rule for Exponents: If a is a nonzero real number and m and n are both integers, then: 8 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Exponents: Zero Exponent: If a does not equal zero then: 9 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Zero Exponent: Zero Exponent: If a does not equal zero then: 10 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Exponents: Negative Exponents: If a is a real number other than 0 and n is a positive integer, then: Or: To raise a base to a negative power, write the reciprocal of the base and make the exponent positive. 11 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Negative Exponents: Negative Exponents: If a is a real number other than 0 and n is a positive integer, then: Only negative exponents move, not negative coefficients 12 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Negative Exponents: Negative Exponents: If a is a real number other than 0 and n is a positive integer, then: Only negative exponents move, not negative coefficients 13 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 The Properties of Exponents: If a and b are real numbers and m and n are integers, then: Product rule Zero Exponent Negative Exponent Quotient Rule Power rule Power of a product Power of a quotient 14 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Practice Exponents: Simplify completely. Write with positive exponents only. 15 Math 95 Section 5.1 and 5.2 Rules of Exponents Blank.notebook January 24, 2017 Simplifying Exponents: The Rule Not Yet Simplified Simplified No more negative exponents The numbers in the fraction are simplified Numbers raised to powers are evaluated Zero should not be seen as an exponent If variables appear more than once, combine them No more parentheses Factors should be combined 16