F (x) = -4x2+12x-9

What is the value of the discriminate of f?

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

The discriminant of a quadratic is the expression inside the radical of the quadratic formula. b-4 (ac)

Substitute in the values of a, b, and c

12 - 4 (-4.-9)

Simplify each term.

Raise 12 to the power of 2

144 - 4 (-4.-9)

Multiply - 4 by - 9

144-4 x 36

subtract 144-44