Find the complex solutions.
B) {9i}
C) {-9i, 9i}
D) {-81i, 81i}

Question

Find the complex solutions. 
B) {9i} 
C) {-9i, 9i} 
D) {-81i, 81i}

Quizplus · Accepted Answer

Complex solutions occur when the discriminant (b^2 - 4ac) of a quadratic equation is negative. In this case, the quadratic equation is not provided, but the options given are complex numbers. Option B has only one complex number, but the question is looking for solutions in plural form. Option A and D have complex numbers with different magnitudes which implies that they are not solutions of the same equation. Option C has two complex numbers of the same magnitude but with opposite signs, which implies that they are solutions of a quadratic equation with real coefficients. Thus, the best choice is C.

Find the Complex Solutions