Question

What is the discriminant of the quadratic equation 4x^2-7x-6=04x 2 −7x−6=0?

Answer 1

145

Explanation:

The discriminant of quadratic ...

ax^2 +bx +c = 0

is ...

d = b^2 -4ac

For your quadratic, you have a=4, b=-7, c=-6, so the discriminant is ...

d = (-7)^2 -4(4)(-6) = 49 +96 = 145

The discriminant is 145.