Find the discriminant of x2+12x−28=0x2+12x-28=0.

Question

IT for homework. Find the discriminant.

Answer 1

Hi Daiel,

 

x^2 + 12x - 28 = 0x^2 + 12x - 28 = 0

First, set 

x^2 + 12x - 28 = 0x^2 + 12x - 28

x^2 = 0

a = 1, b = 0, c = 0 

Discriminant, D = b^2 - 4ac

D = 0^2 - 4*1*0

= 0