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

What is the value of the discriminant of f?

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

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

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