Answer:
Explanation:
The discriminate part of the quadratic solution is sqrt(b^2 - 4ac). If this is less than 0, then you get an imaginary result.
a = 2 b= 4 c = 2
sqrt(4^2 - 4 * 2 * 2)
sqrt(16 - 16) = 0
a does not give any imaginary roots.
Try D
a = 3 b= 2 c = 1
sqrt(2^2 - 4*3 * 1)
sqrt(4- 12)
sqrt(-8)
This gives you an imaginary zero because - 8 has an imaginary sqrt.