Question

f(x)= 5x^2 +2x -1 find the domain of the function

Answer 1

Domaine= All real number
range: (-6/5, infinity)

Answer 2

how did you get the answer??

Answer 3

quadratic functions always have all real number for a domain (-infinity, infinity)
for the range you find the roots that will make the equation equal to zero. [-6/5, infinity)