Question

Solve: 3x2 - 4 = 20

Select one:
a. 8i, -8i
b. 22, -22
c. 8i2, -8i2
d. 2i2, -2i2

Answer 1

is D right?

Answer 2

Actually none of them is right.

I guess in the second choice, you have missed the square root sign.. By the way the roots are real. So now you can make a guess

Answer 3

i know the square root sign won't show up but I got D

Answer 4

You might have made a mistake while transferring 4 to RHS. So you got complex roots. (B) must be correct