Question

What is the equation of the line of symmetry for f(x) = 2x2 – 12x – 20?

Answer 1

if you have
f(x)=ax²+bx+c
the equation of the axis of symmetry is x=-b/(2a)

so

f(x)=2x²-12x-20
a=2
b=-12

axis of symmetry is -(-12)/(2*2)=12/4=3

x=3 is da equation