Ask Question
4 January, 08:14

Which is a zero of quadratic function f (x) = 9x^2-54x-19?

X = 1/3

X = 3 1/3

X = 6 1/3

X = 9 1/3

+5
Answers (1)
  1. 4 January, 08:18
    0
    9x^2 - 54x - 19

    = 9x^2 + 3x - 57x - 19

    = 3x (3x + 1) - 19 (3x + 1)

    = (3x - 19) (3x + 1) = 0

    x = - 1/3, 19/3 ( = 6 1/3)

    Answer is choice 3: - 6 1/3
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Which is a zero of quadratic function f (x) = 9x^2-54x-19? X = 1/3 X = 3 1/3 X = 6 1/3 X = 9 1/3 ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers