What is the axis of symmetry of hx=-2x2+12x-3 ？ x=-15 x=-3 x=3 x=15

Question
What is the axis of symmetry of hx=-2x2+12x-3 ？ x=-15 x=-3 x=3 x=15
Answer:
Write properties of function: axis of symmetry: x = 3
solved
algebra 11 months ago 8683