Question

Question 1 (Multiple Choice Worth 2 points)

(02.07 MC)
Solve -3x2 + 30x - 90 = 0.
Ox=5 ± 2i√5
Ox=5±i√5
Ox=10 ± 2i√5
Ox=10 ± i √5

Answer 1

Answer: Choice 2. x = 5 ± i √5

Explanation:

Use the formula

(b/2)^2

in order to create a new term. Solve for x by using this term to complete the square.

Hope this helps!