Question

http://gyazo.com/de75794c858a95fd36b673c27b43181f question in pic link

Answer 1

which one do you think it is
Hint: the square root of the discriminant is a part of the formula for the zeros

Answer 2

what is the square root of -8?

Answer 3

2isqrt2

Answer 4

what do you know about square roots of negative values?

Answer 5

thats correct
and what kind of number is 2isqrt2?

Answer 6

what do you mean?

Answer 7

is it real?

Answer 8

oh yes

Answer 9

??
i = sqrt( -1 ) thats not real

Answer 10

oh my bad

Answer 11

any number containing is imaginary

Answer 12

that was dumb, sorry

Answer 13

containing i

Answer 14

as the discriminant is negative the zeros are 2 complex numbers

Answer 15

ty!

Answer 16

yw