Question

What is the discriminant of the quadratic equation 7x2 – 9x – 9=0?

A)171

B)333

C)-333

D)-171

Answer 1

B) 333.

Explanation:

The discriminant of ax^2 + bx + c = 0

is b^2 - 4ac

So here we have:

(-9)^2 - 4*7*-9

= 81 + 252

= 333.

Answer 2

Answer B
I hope that I helped ;D