Question

Use the discriminant to determine the nature of the roots of 5x^2 - 5x – 60 = 0.

A.no real roots
B.one real root
C.two distint roots
D,three distinct root

Answer 1

discriminant of quadratic ax^2+bx+c=0 is b^2-4*a*c
Find the discriminant and... if it's positive, you have two roots
if its 0, you have 1 root
if its negative you have 0

Answer 2

Minor fix: If it's 0, then you have 1 double-root. ;-)