Friday, 1/27: Homework is in the Math III book, page 69 odds & #20, page 70 odds & #18
Monday, 1/30: We looked at transformations in different ways. We have a transformation worksheet that investigates the generalities of transformations and the book has some interesting problems on pages 74: 1-3, 5, 7, 11, 13, 17 and on page 75: 17 - 20 that students should work.
Tuesday, 1/31: Long division of numbers vs long division of polynomials and synthetic substitution compared with long division. HW is a worksheet that allows students to practice both long and synthetic division.
Wednesday, 2/1: Although I was out today, students had a worksheet that looked at 4 important theorems:
The Factor Theorem states that x - k is a factor of polynomial p(x) if and only if k is a root of p(x) or in other words, if p(k) = 0.
The Fundamental Theorem of Algebra (technically it's corollary) states that an nth degree polynomial has n complex roots.
The Remainder Theorem states that when polynomial p(x) is divided by (x - k), the remainder is p(k).
The Rational Root Theorem states that any rational root of polynomial p(x) will fit the form of m/n, where m is a factor of the constant term and n is a factor of the leading coefficient.
Assessment problems for these concepts are assigned for homework and below are some selected answers:
1. A) There are 3 roots because it is a cubic (3rd degree) polynomial.
B) {1, -1, 3, -3, 1/2, -1/2, 3/2, -3/2}
C) Once you synthetically divide by 1, you get a quadratic that factors nicely.
2. B) {1, -1, 2, -2, 4, -4}
C) You can tell by substituting in 1 that 1 isn't a root, so try one of the other possible rational roots. Don't complain - there are only 5 others and, yes, you may make a mistake and not find one, but synthetic division is not that hard, so make a choice and just, do it! (And, for more complicated problems, you can always consider the graph.)
Thursday, 2/2: HW Pg. 87, 1-25 odd and Pg. 91: 1-15 odd
Friday, 2/3: HW Pg. 88, 3, 9-15 odd and 16 and Pg. 92: odds , 12
Monday, 2/6: Finding zeros and writing polynomials with given roots, end behavior and leading coefficients. HW page 96: 1-15 odd and page 97: 1-17 odd
Tuesday, 2/7: Turning points and multiplicity of roots. HW page 102&103 odds
Wednesday, 2/8: HW page 100&101 odds. Student also received a copy of an old "Algebra 2" quiz that covers similar material
Thursday, 2/9: QUIZ
Wednesday, 2/15: Attached are the answers to the review worksheet Download Polynomial Review Answers