Expand $(\sqrt{t} + 2t)^4+(\sqrt{t} - 2t)^4$.
\(t^2+8t\left(\sqrt{t}\right)^3+24t^3+32t^3\sqrt{t}+16t^4+\left(\sqrt{t}-2t\right)^4\)
\(t^2+8t\left(\sqrt{t}\right)^3+24t^3+32t^3\sqrt{t}+16t^4+t^2-8t\left(\sqrt{t}\right)^3+24t^3-32t^3\sqrt{t}+16t^4 \)
\(32t^4+48t^3+2t^2\)
-Vinculum