Complex sentence: The Marbury v. Madison decision expanded the power of the Supreme Court in general while announcing its lack of jurisdiction in this particular case, because the 1789 law which gave the Court the power to remedy Marbury's situation was unconstitutional.
Split into simpler sentences: The Marbury v. Madison decision expanded the power of the Supreme Court in general while announcing its impotence in this particular case. The Court declared that the 1789 law which gave the Court the power to remedy Marbury's situation was unconstitutional.