Consider:
Vt = 1v
kn = 1mA/V^2 (I calculated the value of W, L and K'n to match with K'nW/L value)
As Sedra 6th, example 4.6
Solution explained in this video (TT#7), by Professor L.R. Linares
https://www.youtube.com/watch?v=DA8EpMEXoUg
There is a little mistake in the resolution, the equation is correct, but lost the "1/2" that multiply the "kn"
