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Learn how to multiply and divide expressions using the product and quotient rules for exponents, as well as simplify expressions using the power rules. Also, discover how to write expressions with negative exponents as equivalent ones with positive exponents, and how to write numbers in scientific notation.
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Section 4.1 The Product, Quotient, and Power Rules for Exponents
Multiply expressions using the product rule for exponents. A OBJECTIVES
Divide expressions using the quotient rule for exponents. B OBJECTIVES
Use the power rules to simplify expressions. C OBJECTIVES
RULES Signs for Multiplication When multiplying two numbers with the samesign, product is positive (+).
RULES Signs for Multiplication When multiplying two numbers with different signs, product is negative (-).
RULES Signs for Division When dividing two numbers with the same sign, product is positive (+).
RULES Signs for Division When dividing two numbers with different signs, product is negative (-).
RULES FOR EXPONENTS If m, n, and k are positive integers, then: Product rule for exponents Example:
RULES FOR EXPONENTS If m, n, and k are positive integers, then: Quotient rule for exponents
RULES FOR EXPONENTS If m, n, and k are positive integers, then: Quotient rule for exponents Example:
RULES FOR EXPONENTS If m, n, and k are positive integers, then: Power rule for products
RULES FOR EXPONENTS If m, n, and k are positive integers, then: Power rule for products Example:
RULES FOR EXPONENTS If m, n, and k are positive integers, then: Power rule for quotients
RULES FOR EXPONENTS If m, n, and k are positive integers, then: Power rule for quotients Example:
Chapter 4 Exponents and Polynomials Section 4.1Exercise #1
Chapter 4 Exponents and Polynomials Section 4.1Exercise #2
Section 4.2 Integer Exponents
Write an expression with negative exponents as an equivalent one with positive exponents. A OBJECTIVES
Write a fraction involving exponents as a number with a negative power. B OBJECTIVES
Multiply and divide expressions involving negative exponents. C OBJECTIVES
RULES Zero Exponent Negative Exponent If n is a positive integer,
RULES nth Power of a Quotient
RULES Simplifying Fractions with Negative Exponents For any nonzero numbers x and y and any positive integers m and n:
Chapter 4 Exponents and Polynomials Section 4.2Exercise #4
Chapter 4 Exponents and Polynomials Section 4.2Exercise #5
Section 4.3 Applicationof Exponents:Scientific Notation
Write numbers in scientific notation. A OBJECTIVES
Multiply and divide numbers in scientific notation. B Solve applications. C OBJECTIVES
RULES A number in scientific notation is written as Where M is a number between 1 and 10 and n is an integer.
PROCEDURE Writing a number in scientific notation Move decimal point in number so there is only one nonzero digit to its left. The resulting number is M.
PROCEDURE Writing a number in scientific notation If the decimal point is moved to the left,n is positive; If the decimal point is moved to the right, n is negative.
PROCEDURE Writing a number in scientific notation
PROCEDURE Multiplying using scientific notation Multiply decimal parts first. Write result in scientific notation.
PROCEDURE Multiplying using scientific notation Multiply powers of 10 using product rule.
PROCEDURE Multiplying using scientific notation Answer is product obtained in steps 1 and 2 after simplification.
Chapter 4 Exponents and Polynomials Section 4.3Exercise #6
Chapter 4 Exponents and Polynomials Section 4.3Exercise #7
Section 4.4 Polynomials:An Introduction
Classify polynomials. A Find the degree of a polynomial. B OBJECTIVES
Write a polynomial in descending order. C Evaluate polynomials. D OBJECTIVES