Question

Elect the correct answer. What are the solutions of this quadratic equation?

x2 + 2x = -2
A. x = 1 ± i
B. x = -1 ± i
C. x = 0
D. x = ± i

Answer 1

The answer is...

B.

x = -1 ± i

Explanation:

I got it right on Edmentum ;)

Answer 2

Rewrite equation as:

x^2 + 2x +2 =0

a = 1 b = 2 c = 2

x = (-b +- sqr root (b^2 -4ac)) / 2a

x = (-2 +- sqr root (2^2 - 4*1*2) ) / 2

x = (-2 +- sqr root (4 - 8) ) / 2

x = (-2 + sqr root (-4) ) / 2

x = -1 +- i

Explanation: