Question

What is the discriminant of the polynomial below?

9х2 - 18х+9
ОА. -18
ОВ. 648
Ос. о
напна
о

Answer 1

discriminant=D=0

Explanation:

given, 9x^2-18x+9=0...............(1)

equ (1) divided by 9

x^2-2x+1=0

discriminant=D=b^2-4ac

where, b=-2, a=1, c=1

D=(-2)^2-
`4* 1* 1`

D=4-4=0

D=0

hence discriminant=D=0 answer