What is the value of j in the equation √ j √ j 14 = 3√ j 10?

The answer is 16.

The equation is:

√j + √j + 14 = 3√j + 10

2√j + 14 = 3√j + 10

14 - 10 = 3√j - 2√1

4 = √j

Now, we will square both sides of the equation:

4² = (√j) ²

16 = j.

Therefore, j is 16.