Answer:
L = ±√( (100c² - 100v²) / C² )
Step-by-step explanation:
You're just doing reverse PEMDAS.
So first get all the values correlated with L on one side and the non-L values on the other side using subtraction/addition.
Then remove all coefficient using multiplication/division.
Then take the sqareroot to get rid of the squre on the v.
Remember that taking squareroot gives a ± answer because
(x)² = (-x)²