Question

What are the roots of the equation x² - 12x + 72 = 0 in simplest a + bi form?

Answer 1

Explanation:

`{x}^(2) - 12x + 36 = - 36`

`(x - 6) {}^(2) = - 36`

`(x - 6) {}^{} = 6i`

`x = 6 + 6i`

`x = 6 - 6i`