Final answer:
To express -1/3 √-90 in terms of i, the equation becomes -1/3 i√90.
Step-by-step explanation:
To express the equation -1/3 √-90 in terms of i, we can simplify the square root of -90 by separating it into two parts: the square root of -1 and the square root of 90. The square root of -1 is represented as i, and the square root of 90 is represented as √90. Therefore, the equation becomes -1/3 i√90.