Splash Screen. Concept Example 1 Simplify Expressions A. Simplify the expression. Assume that no variable equals 0. Original expression Definition.

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Presentation transcript:

Splash Screen

Concept

Example 1 Simplify Expressions A. Simplify the expression. Assume that no variable equals 0. Original expression Definition of negative exponents Definition of exponents

Example 1 Simplify Expressions Simplify. Divide out common factors.

Example 1 Simplify Expressions B. Simplify the expression. Assume that no variable equals 0. Quotient of powers Subtract powers. Definition of negative exponents Answer:

Example 1 Simplify Expressions C. Simplify the expression. Assume that no variable equals 0. Power of a quotient Power of a product

Example 1 Simplify Expressions Power of a power

A. B. C. D. A.A B.B C.C D.D Example 1 A. Simplify the expression. Assume that no variable equals 0.

A.A B.B C.C D.D Example 1 B. Simplify the expression Assume that no variable equals 0. A. B. C. D.

A. B. C. D. A.A B.B C.C D.D Example 1 C. Simplify the expression. Assume that no variable equals 0.

Example 2 Degree of a Polynomial Answer:

Example 2 Degree of a Polynomial Answer: This expression is a polynomial because each term is a monomial. The degree of the first term is 5 and the degree of the second term is or 9. The degree of the polynomial is 9.

Example 2 Degree of a Polynomial C. Determine whether is a polynomial. If it is a polynomial, state the degree of the polynomial. Answer: The expression is not a polynomial because is not a monomial: Monomials cannot contain variables in the denominator.

A. Is a polynomial? If it is a polynomial, state the degree of the polynomial. A.A B.B C.C D.D Example 2 A.yes, 5 B.yes, 8 C.yes, 3 D.no

A.A B.B C.C D.D Example 2 B. Is a polynomial? If it is a polynomial, state the degree of the polynomial. A.yes, 2 B.yes, C.yes, 1 D.no

A.A B.B C.C D.D Example 2 A.yes, 5 B.yes, 6 C.yes, 7 D.no C. Is a polynomial? If it is a polynomial, state the degree of the polynomial.

Example 3 Simplify Polynomial Expressions A. Simplify (2a 3 + 5a – 7) – (a 3 – 3a + 2). (2a 3 + 5a – 7) – (a 3 – 3a + 2) = a 3 + 8a – 9Combine like terms. Group like terms. Distribute the –1. Answer: a 3 + 8a – 9

Example 3 Simplify Polynomial Expressions B. Simplify (4x 2 – 9x + 3) + (–2x 2 – 5x – 6). Align like terms vertically and add. Answer: 2x 2 – 14x – 3 4x 2 – 9x + 3 (+)–2x 2 – 5x – 6 2x 2 –14x – 3

Example 4 Simplify by Using the Distributive Property Find –y(4y 2 + 2y – 3). –y(4y 2 + 2y – 3) = –4y 3 – 2y 2 + 3yMultiply the monomials. Answer: –4y 3 – 2y 2 + 3y = –y(4y 2 ) – y(2y) – y(–3)Distributive Property

A.A B.B C.C D.D Example 4 A.–3x 2 – 2x + 5 B.–4x 2 – 3x 2 – 6x C.–3x 4 + 2x 2 – 5x D.–3x 4 – 2x 3 + 5x Find –x(3x 3 – 2x + 5).

Example 6 Multiply Polynomials Find (a 2 + 3a – 4)(a + 2). (a 2 + 3a – 4)(a + 2) Distributive Property Multiply monomials.

Example 6 Multiply Polynomials = a 3 + 5a 2 + 2a – 8Combine like terms. Answer: a 3 + 5a 2 + 2a – 8

End of the Lesson