x2 + 3ix + 10 = 0
Given:
⇒x2 + 5ix-2ix + 10 = 0
⇒
⇒ = 0
⇒x + 5i = 0 & x-2i = 0
⇒x = -5i & x = 2i
Ans: x = -5i & x = 2i