Upload
jasmine-burgher
View
217
Download
0
Tags:
Embed Size (px)
Citation preview
PolynomialsMr. Eaton
Advanced 8th Grade MathScott Foresman – Chapter 10-5
Packaging Chickens –
What Must We Consider ??
(Think-Pair-Share)
Review Please get out a piece of paper and answer the following
questions. I will come around and stamp each correct answer. Raise your hand with any questions!
1) Evaluate each expression for n = -2, n = 1, and n = 5. A)
B)
C)
Lesson Outline Define: polynomial, terms, monomial,
binomial, trinomial, and degree
Learn how to write polynomials in descending order and determine its degree
Evaluate polynomial expressions
Definitions A polynomial is an algebraic expression that
is the sum of one or more parts, called terms. This polynomial: -2x3 - 4x2 + 3x + 1 Has these terms:
-2x3
-4x2
3x 1
Definitions (cont.) Monomial:
one term
x 2x3
-2
Binomial: two terms
x + 1 2x3 – 7x
Trinomial: three terms
x + 3x2 – 4x3
x2 – 4x3 + 3
Degree The degree of a
polynomial is the value of the largest exponent that appears in any term.
Try It: What is the degree of the following expressions: A) 2x3
B) -2 C) x D) 2x2 – 7x E) x2 – 4x3 + 3
Writing Polynomials Highest degree first “Writing a polynomial in descending order” EX:
x4 + 3x – 2x6 + 5should be written as:– 2x6 + x4 + 3x + 5
Evaluate Polynomial Expressions
Replacement and order of operations are the same as they have been in the past.
Try It/In Class Examples: A) Evaluate x3 – x2 + x + 5 for x = 0 and x = -3
B) The volume of a cube can be represented by the equation V = s3, where V = volume and s = the length of a side. Find the volume of a cube with each given side length:
3 inches 1.5 inches 2 cm