6. Campbell and Han are each trying to solve the equation x² - 6x + 10 = 0. They
know that the solutions to x² = -1 are i and -i, but they are not sure how to use this
information to solve for x in their equation.
Here is Campbell's work:
x² - 6x + 10 = 0
x² - 6x = -10
x² - 6x +9 = -10 + 9
(x - 3)² = -1
Show how Campbell can finish his work using complex numbers.