zu 2.)
=(2/3) *x^4 -(22/3) x^3 -(48/3)*x^2
Klammere 2/3 x^2 aus
------>
=2/3 x^2 (x^2 -11x +24)
----->x^2 -11x +24 =0 z.B. pq - Formel
x1.2= 11/2±√ (121/2 -96/4)
x1.2= 11/2±5/2
x1= 8
x2=3
--------->
=(2/3) x^2 (x-8)( x-3)
---------------------
5.)
x^2/3 +2x
=x( (x/3) +2)