Re: Need help with solving problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg5400] Re: [mg5339] Need help with solving problem*From*: "C. Woll" <carlw at u.washington.edu>*Date*: Thu, 5 Dec 1996 14:50:33 -0500*Sender*: owner-wri-mathgroup at wolfram.com

On Wed, 27 Nov 1996, Ingimar V=F6lundarson wrote: > Can anyone help me with this problem? >=20 > (4^x)+(2^x)-2=3D0 >=20 > Everyone can see that x=3D0 but: >=20 > (4^x)+(2^x)-2=3D0 =3D> > 2*(2^x)+(2^x)-2=3D0 =3D> > > more stuff Hi Ingimar, The problem here is that 4^x !=3D 2*(2^x) Instead, 4^x =3D 2^(2*x) =3D (2^x)^2 Carl Woll