I have a^2/(1-a) = K/b. how to have just the "a" on the left side? Thank you :)
a² / (1 - a) = K / b
Cross multiply: a²b = K(1 - a)
Multiply out: a²b = K - Ka
Transfer: a²b + Ka - K = 0
Use the quadratic formula: a = [-K ± √( K² + 4bK) ] / (2b)