Lösung Vereinfachen

1.)   \(\frac{1}{4}\cdot2^{a+2}=\frac{1}{2^2}\cdot2^{a}\cdot2^{2}=2^{a}\)
2.)   \(\frac{x^{2u}\cdot x^{a-u}}{x^u}=\frac{x^{2u}\cdot x^{a}\cdot x^{-u}}{x^u}=\frac{x^{2u}\cdot x^{a}}{x^u\cdot x^{+u}}=\frac{x^{2u}\cdot x^{a}}{x^{2u}}=x^{a}\)