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24 January 2011

You know what it is……. Green and Yellow Green and Yellow. You know what it is……. Green and Yellow Green and Yellow. 24 January 2011. Algebra 2. You know what it is……. Green and Yellow Green and Yellow. You know what it is……. Green and Yellow Green and Yellow.

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24 January 2011

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  1. You know what it is……. Green and Yellow Green and Yellow You know what it is……. Green and Yellow Green and Yellow 24 January 2011 Algebra 2 You know what it is……. Green and Yellow Green and Yellow You know what it is……. Green and Yellow Green and Yellow

  2. Bellringer:Which of the following fractions is between 2/5 and 4/5? • 1/10 • 3/9 • 6/7 • 7/10 • 9/10 0 of 30

  3. Agenda: • Bellringer / Homework Check • Multiplying Binomials Using Box Method • Student Practice • Multiplying Binomials Using FOIL Method • Student Practice • Journal / Reflection • Homework

  4. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) Make a 2x2 square box Box Method XEI.405:Multiply 2 Binomials

  5. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) Write the first binomial across the top x +4 Box Method XEI.405:Multiply 2 Binomials

  6. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) Write the second binomial going down x +4 x -3 Box Method XEI.405:Multiply 2 Binomials

  7. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) Multiply x*x x +4 x x2 -3 Box Method XEI.405:Multiply 2 Binomials

  8. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) Multiply x*4 x +4 x x2 4x -3 Box Method XEI.405:Multiply 2 Binomials

  9. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) Multiply -3*x x +4 x x2 4x -3 -3x Box Method XEI.405:Multiply 2 Binomials

  10. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) Multiply -3*4 x +4 x x2 4x -3 -3x -12 Box Method XEI.405:Multiply 2 Binomials

  11. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) List each term inside the box x +4 x x2 4x -3 -3x -12 x2 + 4x – 3x - 12 Box Method XEI.405:Multiply 2 Binomials

  12. Notes: Multiplying Binomials 1/24 You can use the box method to multiply two binomials: Example 1: (x + 4)(x – 3) Simplify x +4 x x2 4x -3 -3x -12 x2 + 4x – 3x – 12 = x2 + x - 12 Box Method XEI.405:Multiply 2 Binomials

  13. Multiply the following binomials:(x – 3)(x – 2) • x2 – x – 6 • x2 – 5x – 6 • x2 – 5x + 6 • x2 + 5x + 6 • x2 + x + 6 0 of 30

  14. Multiply the following binomials:(x + 5)(x – 2) • x2+ 3x – 10 • x2 – 7x – 10 • x2 – 3x + 10 • x2 + 3x + 10 • x2 + 7x + 10 0 of 30

  15. Notes: Multiplying Binomials 1/24 You can use the FOIL to multiply two binomials. FOIL stands for: First Outer Inner Last FOIL Method XEI.405:Multiply 2 Binomials

  16. Notes: Multiplying Binomials 1/24 • First Outer Inner Last • Example 2: (x – 4)(x – 2) • Multiply the First term in each set • x2 FOIL Method XEI.405:Multiply 2 Binomials

  17. Notes: Multiplying Binomials 1/24 • First Outer Inner Last • Example 2: (x – 4)(x – 2) • Multiply the Outer term in each set • x2– 2x FOIL Method XEI.405:Multiply 2 Binomials

  18. Notes: Multiplying Binomials 1/24 • First Outer InnerLast • Example 2: (x – 4)(x – 2) • Multiply the Inner term in each set • x2 – 2x – 4x FOIL Method XEI.405:Multiply 2 Binomials

  19. Notes: Multiplying Binomials 1/24 • First Outer Inner Last • Example 2: (x – 4)(x – 2) • Multiply the Last term in each set • x2 – 2x – 4x + 8 FOIL Method XEI.405:Multiply 2 Binomials

  20. Notes: Multiplying Binomials 1/24 • First Outer Inner Last • Example 2: (x – 4)(x – 2) • Combine like terms • x2– 2x – 4x + 8 = x2 – 6x + 8 • Final answer: x2 – 6x + 8 FOIL Method XEI.405:Multiply 2 Binomials

  21. What is the product of the First terms?(x + 3)(x + 8) • x2 • 3x • 24 • 8x 0 of 30

  22. What is the product of the Outer terms? (x + 3)(x + 8) • x2 • 3x • 24 • 8x 0 of 30

  23. What is the product of the Inner terms? (x + 3)(x + 8) • x2 • 3x • 24 • 8x 0 of 30

  24. What is the product of the Last terms? (x + 3)(x + 8) • x2 • 3x • 24 • 8x 0 of 30

  25. Journal / Reflection • How do you feel about your performance this first semester? • How do you feel about the teaching this first semester

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