Вправи: 149

149. Спростіть вираз:

1) 7c310m2 • 25m314c8 = 7c3 • 25m310m2 • 14c8 = 5m4c5;

2) –8a327c4 • 45c516a3 = –8a3 • 45c527c4 • 16a3 = –5c6;

3) 4c315a8 • (–5a38c4) = 4c3a315a8 • 8c4 = –16a5c;

4) –125p2q7 • (–10p3q711) = 10p3q725p2q7• 11 = 2p55.