POLYNOMIAL: A polynomial is a or the
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1 MONOMIALS: CC Math I Standards: Unit 6 POLYNOMIALS: INTRODUCTION EXAMPLES: A number 4 y a 1 x y A variable NON-EXAMPLES: Variable as an exponent A sum x x 3 The product of variables 5a The product of numbers and variables Negative exponent 3 A quotient x Examples: Determine if each expression is a monomial. 1.. x xy a z 5. 7 b POLYNOMIAL: A polynomial is a or the of different monomials. Determine which expressions are polynomials: c a 6. q 7. d 8. p + q 9. ab 10. x d 4 + 4x y 3 5y - + 4y BINOMIAL: Examples: SPECIFIC TYPES OF POLYNOMIALS TRINOMIAL: Examples: Examples #1-19: Determine if each expression is a monomial, binomial, trinomial, or not a polynomial m x 3x y 6 7y x
2 16. 3x + 8x 5x 17. 8x 3 y z 18. a + 3ab 5ba 19. 9r r DEGREE: Based on the exponents of the variables. The degree of a MONOMIAL: The degree of a POLYNOMIAL: 0. 5mn Examples: Find the degree of each polynomial.. 5a x 7x 1. 9x 3 yz x y + 3x m 3 m n 11 REORDERING TERMS OF A POLYNOMIAL BASED ON DEGREE: MOVE TERMS AND KEEP THE SIGN WITH THE TERM Example: Arrange the polynomials in descending order according to the powers of the x. a) 6x + 5 8x x 3 d) 3a 3 x a 4 + 4ax 5 + 9a x b) 7x 11x x 5 e) 15x 5 x y 7yx 4 + x 3 y c) 5x 6 3x + 7x x 8
3 CC Math I Standards: Unit 6 POLYNOMIALS: ADDITION AND SUBTRACTION WARM UP ACTIVITY: Simplify the following 1) 3x y + 4y 6x 3) 4z + t + 3z t 5) 8a + 6b + 6a + b ) 3x 1y x + 6y 4) 5a + 3b c 8a ADDING AND SUBTRACTING POLYNOMIALS: When adding and subtracting polynomials, you COMBINE LIKE TERMS. Be careful of parentheses and positive or negative signs with the operations. Exp 1: (3x 4x + 8) + (x 7x 5) Exp 4: (6y + 8y 4 5y) (9y 4 7y + y ) Exp : (3n + 13n 3 + 5n) (7n + 4n 3 ) Exp 5: (7y + y 3) + ( 4y + 5y ) Example 3: (b + 8ab 3 + 4b) (9b 5ab 3 ) Exp 6: (3x + 5x + ) (4 x) + (5x + 7) PRACTICE PROBLEMS: Simplify each expression 1. x 3 x 7x 9 ( 3x 5) (x 3 x. )
4 ( x 3) (4x 3 4. (x x 4) ( x 3x 7) 3. ) (3a a 4) ( a a 1 6. ( t 1) (t 3) 5. ) (x 3) ( x x 1 8. (x 5xy 3y ) (8x 7y ) 7. ) 9. ( z 5) (3z z 4) z 10. ( 4m 3n) (n 5m) ( 6x 5) (3x 1 1. (a 3a) (5b b ) (a 8b) 11. ) 13. (3 5) ( 4z z ) ( z 3) z 14. ( 3x ) (5x 4) (19 x) x 16. (6m 7) ( m ) (m 3) 15. (10 8x) (6 3x ) (x 9)
5 Find the PERIMETER of the shape. Equation: Perimeter = Sum of all the sides 3 x 4x - 8 3a - b 3a - b y 3x - 3 9x 3y y 3a - b 1 + 5x + 7y 3b 4a x 4z a 6 + a 5x 4z + 3 3b 4a + 5 3x + 5x + 7 6x - 3 6x - 3 3x + 5x + 7 3ab + 4a a 3b 6b 5ab 3x 4x 3x 4x 7 x 7 x 5x + 7x + 3
6 CC Math I Standards: Adding and Subtracting Polynomials WORKSHEET Unit 6 NAME: Find the sum or difference: 1) (x 3-7x + 4x ) (x 9x + 4) ) (3a + b 7c) + (6b 4a + 9c) 3) (5y xy + 6x 3x + 7y 9) + (3x 4x + 5) (5y 3y + 6) Word Problems: 1) Bob mowed (x + 5x 3) yards on Monday, (4x 7) yards on Tuesday, and (3x + 10) yards on Wednesday. a. How many yards did he mow in the three days? b. If Bob mowed 14x + 1x 3 yards total for the entire week, how many yards did he mow during the rest of the week? ) Molly has (4x + 10) dollars and Ron has (-5x + 0) dollars. a. How much money do they have altogether? b. How much more money does Molly have than Ron? 3) Ross has (8x 5) tickets for Chuck E Cheese. He is going to play today and wants to buy a prize that is (15x + 1) tickets. How many tickets must he win to have enough tickets to buy the prize?
7 Find the missing side of a shape. x 5 Perimeter 5x + 7x + 1 3x + 9x??? 9ab + 8a 4a 4ab??? 7b ab Perimeter 9b ab + 1a 5x 3x + Perimeter 14x + 4x 8??? 4) The measure of the perimeter of a triangle is 37s + 4. It is known that two of the sides of the triangle have measures of 14s + 16 and 10s + 0. Find the length of the third side. 5) A triangle has a perimeter of 10a + 3b + 1 and has sides of length 3a + 8 and 5a + b, what is the length of the third side? 6) For a rectangle with length of 3x + 4 and perimeter of 10x + 18, what is the width of the rectangle? 7) A rectangle has a perimeter of 1y y + 18 and has a width of 4y y + 6. What is the length of the rectangle?
8 CC Math I Standards: Unit 6 POLYNOMIALS: Multiplication of Monomial and Polynomial DISTRIBUTIVE PROPERTY REVIEW 1) -4 ( 6x ) ) 3 (5p + q 3r) 3) - (-x - 7y) SIMPLIFYING PRACTICE PROBLEMS: 1) (4x + 7x)3 ) 1z 5z + 9z 3) -7 ( 6m + 11m) 4) 4(11 3x) 5) 5(5a 3b 6) 6) -(x - 8x + 3x 3 6) 7) 9x 4(6 3x) 8) 5(3b a) 7b 9) 1 + 3(7x + ) 10) 6(4y + 3z) 11z 11) 5 + (4m 7n) + 9n 1) 1 7(3 5r) + 8r
9 13) 19x + 1( + 4x) 18 14) (x + 6) + 3(5x 7) 15) 6(4a b) (9b 7a) 16) 5(3x + y) 4(7y + 8z) LAWS of EXPONENTS REVIEW: Multiply Coefficients and Add Exponents of Same Variable 1) (3x )(7x 3 ) ) 8m 5 m 3) t 3 6t 7 4) (4y 4 )(-9y ) 5) 3r 5 r 7r 6 6) (-p 3 r)(11r 4 p 6 ) 7) (6y 3 x)(5y 3 ) 8) 7c 5 a 3 b 8a b 4 c 9) (-3t 3 u )(-4u 3 t) Using Law of Exponents and Distributive Property: 1) 4x(x + 6) ) 9y (5y 3) 3) -6a(3a 7a 11) 4) 3z 3 (1z + 4z 3 1) 5) pq(3p + 6pq + 7q ) 6) -5xy 3 ( -3x 3 + 7y xy)
10 CC Math I Standards: Unit 6 MULTIPLYING A POLYNOMIAL BY A MONOMIAL: USE THE DISTRIBUTIVE PROPERTY with VARIABLE TERMS Keep track of Coefficients and Exponents of Variables Exp 1: y(y + 5) Exp : -n(7 5n ) Exp 3: -7m (3m + 4m + 5) Exp 4: ab (3a ab + 6b ) Exp 5: 3a 3 (a 5a + 8) Exp 6: -3x 3 y (5yx + 6y ) BOX METHOD: 6y (4y 9y 7) = Practice. Simplify each example 1. 7(x 5). 4 (3x x 7) 3. 5a(6 3a ) 4. m (5m 7m 8) 5. 3r ( r 6r 5) 6. 6x 3 y( x 7y 3xy)
11 7. 11y( y 3) 13 3 y (7y 3x) 5y 8. y 9. 3(x 3 + 4x ) + x(x 7) (3d + 5d) d (d 7d + 1) (t 4t 15) + 6t (5t + ) SPECIAL PROBLEMS: Find the area of the shaded region in the simplest form. (BIG SHAPE) (LITTLE SHAPE HOLE ) = SHADED REGION 1) A square of side length 8 has a triangle of base 4 and height 3 cut out of it. EXAMPLES: ) A rectangle with width of 7 and length of 9 has a square of side length 5 cut out of it. 3) 4) 5) 11y 6y 4x 3x 8 -t 6y 3x 3 - t t 11y 5x - 3t
12 BINOMIAL #1 POLYNOMIALS: FOIL BOX METHOD Part 1 BINOMIAL # F O first outer terms terms I inner terms L last terms CC Math I Standards: Unit 6 FOIL Box Method: The box method does the exact same multiplications as our standard FOIL method, but gives it in a graphic organizer. Be careful of positive and negatives. Combine like terms of boxes to finish. Exp 1: (x + ) (x + 1) Exp : (y + 3) (y - 4) Exp 3: (a 5 ) (a 7 ) Exp 4: (3x + ) (x + 4) Exp 5: (5b + 9) (b - 4) Exp 6: (n -7) (3n + 3) Exp 7: (x - 5) (x - 5) Exp 8: (8r r) (5r + 4) Exp 9: (x + 5y) (7y 3x)
13 Practice Problems: Multiply the following binomials. 1. ( x 3)( x ). ( x 1)( x 1) 3. ( y 4)( y ) 4. ( x 7)( x 3) 5. ( y 4)(y 3) 6. ( 4h 3)(3h ) 7. ( m 3)( m 1) 8. ( a 3)( a ) 9. ( 3x 1)( x ) 10. ( x 3)(x ) 11. ( 3a b)(a 4b) 1. ( x y)(3x y) 13. ( x 4)( x 3) 14. ( 5 x 6x)( x 1) 15. ( a )( a 1)
14 CC Math I Standards: Unit 6 POLYNOMIALS: FOIL BOX METHOD Part WARM UP: Simplify each expression by FOIL 1) ( 3b 5)( b 4) ) ( y 7)( y 6) 3) ( n 9)( n 8) BINOMIAL TIMES TRINOMIAL: One More Column for 3 rd term in trinomial Example 1: (a + 3) (a + 7a + 6) Example : (4x + 9) (x 5x + 3) Example 3: (y - 5) (4y 3y + ) Example 4: (b + 1) (b 5b + 4) Example 5: (x - 6) (x 7x - 8 ) Example 6: (3b 4b) (b b + 7)
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