Algebra Problem:

Question

Solve: -3x² = 6x + 9 The solution is a complex number consisting of a “real” part ± an “imaginary” part ± .What is this “imaginary” part of the complex number solution?

(A) ± 2√3 i

(B) ± √2 i

(C) ± √6 i

(D) ± √15 i

(E) None of these

For this I got; (B) ± √2 i. Is my answer correct?

Answer 1

Yes, your answer is correct.

Answer 2

We have equation 3x² + 6x + 9 = 0 or x² + 2x + 3 = 0, or x = - 1 ± i√2;

ANswer is (B)