Ask Question
3 April, 12:12

F (x) = - 7x2 + 8x + 2

What is the value of the discriminant of f?

How many x-intercepts does the graph of f have?

+5
Answers (2)
  1. 3 April, 14:59
    0
    120; Two

    Step-by-step explanation:

    -7x2 + 8x + 2

    B² - 4AC

    8² - 4 (-7) (2)

    64 - (-56)

    120

    Since 120 > 0, the graph will have two distinct x-intercepts
  2. 3 April, 15:25
    0
    120

    2 real intercepts

    Step-by-step explanation:

    f (x) = - 7x^2 + 8x + 2

    The discriminant is

    b^2 - 4ac

    where ax^2 + bx+c

    a=-7 b = 8 c=2

    The discriminant is

    8^2 - 4 (-7) (2)

    64 + 56

    120

    This will have 2 real x intercepts because 120>0
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “F (x) = - 7x2 + 8x + 2 What is the value of the discriminant of f? How many x-intercepts does the graph of f have? ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers