You wouldn’t expect this "quadratic" equation to have 6 solutions!
9:10
Quadratic formula for non-constant coefficients
13:51
so you want a VERY HARD math question?!
12:59
7 factorials you probably didn't know
8:31
Raíz cuadrada de un número imaginario
11:15
El problema más difícil en la prueba más difícil.
22:45
Vence A Ronaldo, Gana $1,000,000
11:25
solving equations but they get increasingly more impossible?
13:09