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Algebra 2: Completing the Square with a ≠ 1

Explore completing the square when a ≠ 1 with step-by-step examples. Check homework, use a calculator, and review key notes along with solving problems.

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Algebra 2: Completing the Square with a ≠ 1

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

  2. 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)

  3. 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)

  4. Do Problems 1 and 2 Homework: finish worksheet

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