3x2 + 7ix + 6 = 0

Given:


3x2 + 7ix + 6 = 0


3x2 + 9ix-2ix + 6 = 0



…(i2 = -1)


= 0




x + 3i = 0 & 3x-2i = 0


x = 3i &


Ans: x = 3i and


1