Ask Question
22 October, 13:13

What is the axis of symmetry and vertex given the equation,

y=2x^2-12x+21

+4
Answers (1)
  1. 22 October, 17:08
    0
    y = 2x² - 12x + 21 = 2 (x² + 6x) + 21.

    Using the complet the square method, you get:

    2 (x² + 6x) + 21 = 2 (x² + 6x + 9) - 2*9 + 21 = 2 (x + 3) ² + 3.

    So the axis of symmetry is: x = - 3.

    The vertex is: (-3, 3)
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “What is the axis of symmetry and vertex given the equation, y=2x^2-12x+21 ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers