Question

Determine which quadratic equation has two
non-real solutions.

Answer 1

Hello,

answer C : -3x²-3x-2=0 (or 3x²+3x+2=0)

Explanation:

A: delta=12²-4*2*18=0 not negative

B: delta= 5²+4*3*1=37 not negative

C: 3x²+2x+2=0, delta=2²-4*3*2=16-24=-8 is negative: roots are complex

D: delta 16²-4*2*2=240 not negative