Bellwork: 2/13/18 Find each product.

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Presentation transcript:

Bellwork: 2/13/18 Find each product. 1. (x + 2)(x + 7) 2. (x – 11)(x + 5) 3. (x – 10)2 Factor each polynomial. 4. x2 + 12x + 35 5. x2 + 2x – 63 6. x2 – 10x + 16 7. 2x2 – 16x + 32

Solving Quadratic Equations We will... solve quadratic equations by factoring. http://www.projectsharetexas.org/resource/analyzing-graphs-quadratic-functions

Solve by graphing: 1) x 2 - 4 = 0 2) -x2 + 12x - 36 = 0 3) 2x2 = 3x2 - 2x - 8 4) -2x2 - 6 = 0

Use the Zero Product Property to solve the equation.  Check your answer. (x – 7)(x + 2) = 0 (5x + 4)(2x – 3) = 0 (x)(3x + 4) = 0 (x – 2)(x) = 0

Solve the quadratic equation by factoring. Check your  answer. x2 – 6x + 8 = 0 x2 + 4x = 21 –2x2 = 20x + 50 x2 – 12x + 36 = 0

Solve the quadratic equation by factoring. Check your  answer. x2 – 6x + 9 = 0 x2 + 4x = 5 30x = –9x2 – 25 3x2 – 4x + 1 = 0

3) x2- 3x = 10 5) -3x2 = 18x + 27 2) x2 - 8x - 9 = 0 4) x2 + 10x = -16

Bellwork: 2/15/18 Factor and Solve: 1) x2+18x+32=0 2) x2-4x=12

Solve by Factoring From the paper on Tuesday... 1) x= 8,3 6) b= 2/3, 3/2 2) n= -5,-2 7) x= -3/8, -7 3) n=6,4 8) k=1/5, 3/7 4) n=-6, 3 9) r=6,5 5) n=4,-1

Solving by Factoring 1) 2) 3)

http://www.ck12.org/algebra/Use-Graphs-to-Solve-Quadratic-Equations/enrichment/ Parabolas-in-Mario/?referrer=featured_content

Bellwork: 2/16/18 Solve by factoring: 1) 10x2+13x-3=0 2) 4x2-9x+5=0