Question

Find the discriminant of the equation -x^2+x+1=0 and write the nature of the roots.​

Answer 1

Answer:

The discriminant is 5.

Step-by-step explanation:

In x^2+x+1=0

a=(-1), b=1, c=1

Therefore, using the discriminant formula

= b^2-4ac

we have,

(1)^2-4*-1*1

1+4

=5

The nature of roots is real and distinct (since D>0)