Question

Solve the equation.

9x2 + 4 = 0

Answer 1

Answer:
`x = (2)/(3)i , -(2)/(3)i`

Explanation:

9x² + 4 = 0

-4 -4

9x² = -4

`(9x^(2) )/(9) = (-4)/(9)`

x² =
`(-4)/(9)`

`\sqrt{x^(2) } = \sqrt{-(4)/(9) }`

`x = +/- (2)/(3)i`