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Today in Algebra 2. Go over homework Need a calculator Notes: Completing the Square (when a ≠ 1) Homework. Completing the Square. y = 2x 2 + 4x – 3 y = (2x 2 + 4x ) – 3 y = 2(x 2 + 2x ) – 3 y = 2(x 2 + 2 x + 1) – 3 – 2 y = 2(x + 1 ) 2 – 5 Vertex (-1, - 5 ).

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today in algebra 2
Today in Algebra 2
  • Go over homework
  • Need a calculator
  • Notes:
    • Completing the Square (when a ≠ 1)
  • Homework
completing the square
Completing the Square

y = 2x2+ 4x – 3

y = (2x2+ 4x) – 3

y = 2(x2+ 2x) – 3

y = 2(x2+ 2x + 1) – 3– 2

y = 2(x + 1)2– 5

Vertex (-1, -5)

slide3
y = -3x2– 9x + 1

y = -(3x2+ 9x) + 1

y = -3(x2 +3x) + 1

y = -3(x2 + 3x + 2.25) + 1+ 6.75

y = -3(x +1.5)2 +7.75

Vertex (-1.5, 7.75)

slide4

Do Problems 1 and 2

Homework: finish worksheet