Question

The polynomial given below has______ roots(s).
4x^2+8x+5
A. one negative and one positive
B. two negative
C. two positive
D. two complex

Answer 1

use the discriminant to determine the nature of the roots

\[\Delta = b^2 - 4ac\]

in your question a = 4, b = 8 and c = 5

the conditions

discriminant > 0 2 real

discriminant = 0 a repeated root

discriminant < 0 2 complex roots

this should help

Answer 2

i got 16

Answer 3

is it positive 16 or negative 16..?

Answer 4

+

Answer 5

I think you need to check it...

Answer 6

\[8^2 - 4 \times 4 \times 5 = \]

Answer 7

snap -16

Answer 8

ok... so go and look at the conditions for the discriminant.... and see what the answer means...

Answer 9

b?

Answer 10

because the 16 is -

Answer 11

nope.... go and read my post above about the values for the discriminant....

Answer 12

complex root

Answer 13

thats correct...