Question

What is the discriminant of the polynomial below?

4x^2+4x+1

a.) -12
b.) -4
c.) 0
d.) 32

Answer 1

c) D = 0

Explanation:

4x² + 4x + 1

This is of the form a²x + bx + c

where a = 4, b = 4 and c =1

The discriminant D is gn by:

D = b² - 4ac

= (4)² - 4(4)(1)

= 16 - 16

= 0

D = 0