Page 86 - Math Course 2 (Book 1)
P. 86

Introduction to Polynomials

           Mo. 3


           Lesson 4




          KEY CONCEPTS:
          1. Identify and classify polynomials.                          Let’s Begin
          2. Find the degree of a polynomial




         MO. 3 - L4a                                       Classify Polynomials
            Identifying and Classifying                     Examples

                       Polynomials

                                                                              –2  is a polynomial. If it is,
                                                            Determine whether
                     Vocabulary A-Z                                           x
                     Let us learn some vocabulary           classify it as a monomial, binomial, or trinomial.
                                                                               The expression is not a
                                                                                              –2
                                                               Answer     polynomial because   x   has
                                                                            a variable in the denominator.
         Polynomial Monomial    Binomial    Trinomial

           Terms         1         2           3
                                                                              2
                                                            Determine whether x  – 12 is a polynomial. If it is,
                         4        x + 1     a + b + c       classify it as a monomial, binomial, or trinomial.

                                            2
          Examples       x       a – 5b    x  + 2x + 1
                                                                           This is a polynomial because it is
                                             3
                                  2
                        2y 3     c  + d   3m – mn + 1          Answer      the difference of two monomials.
                                                                            There are two terms, so it is a
                                                                                     binomial.
        Polynomial


        An algebraic expression that contains one or more   Real World Example
        monomials.
                                                            AREA
                                                            The formula for the surface area (A) of a cube is
        Binomial                                            the polynomial A = 6s , where s is the side length.
                                                                               2
                                                            Find the surface area of a cube with a side length of
        A polynomial with two terms.                        13 meters.
                                                                          A = 6(s)²      A = 6 (169)


                                                                          A = 6(13)²     A = 1014
        Trinomial
                                                               Answer               1014 m    2
        A polynomial with three terms.













    78
   81   82   83   84   85   86   87   88   89   90   91