Chapter 4 Review Polynomials
Degree of a Monomial Degree of a Polynomial Coefficient 4x2y3z3 Degree = Coefficient = 4x2y2z2 + 3xy3z + 7x4y3z3 Degree of the polynomial =
Laws of Exponents When multiplying variables, add the exponents When raising a monomial to a power, multiply the exponents 3x2(4xy3)(y2)= 12x3y5 (2x2y3)4 = 16x8y12
Multiplying Polynomials (3x + 1)2 (3x + 2) (5x + 7) (3x + 2) (5x2 + 7x - 1) (3x + 1)3
Factoring GCF Grouping Perfect Square Trinomials with a=1 Difference of Squares Sum and Difference of Cubes
Special Products- Review You need to be able to quickly recognize special products trinomials Perfect Square Trinomials a2 + 2ab + b2 = (a + b)2 a2 - 2ab + b2 = (a - b)2 Difference of Squares a2 – b2 = (a +b)(a – b) Sum and Difference of Cubes a3 + b3 = (a + b) (a2 - ab + b2) a3 - b3 = (a - b) (a2 + ab + b2)
Factoring- What pattern do you see? x2 + 2x + 1 Perfect square trinomial (x + 1)2 16x2 – 9 Difference of squares (4x-3)(4x+3) 9x2- 12x + 4 (3x – 2)2 8x3 – 27 Difference of cubes (2x – 3)(4x2 + 6x + 9)
Solving Polynomial Equations Get everything = 0 Factor Set each factor = 0 and solve for the variable x2= x + 30 x2- x – 30 = 0 (x + 5)(x – 6)= 0 {-5, 6}
Word problems A rectangle is twice as long as it is wide. If its length is increased by 4cm and its width is decreased by 3cm, the new rectangle formed has an area of 100 cm2. Find the length and width of the original rectangle. Width = 8cm, Length = 16 cm
Frame/deck
Baseball Problem
Volume of a Box Problem