Вправи: 4.30

4.30 Подайте вираз у вигляді дробу:

1) m – n – m2+ n2m+n = m2- n2- (m2+ n2)m+n = m2- n2- m2- n2m+n = –2n2m+n;

2) p – 4p-2 – 2 = (p-2)2- 4p-2 = p2- 4p+4-4p-2 = p2- 4pp-2;

3) a² – a4a2- 1 + 1 = a2+ 1a2- 1- a4a2- 1 = a4- 1- a4a2- 1 = –1a2- 1 = 11- a2;

4) 8p22p-3 – 4p – 1 = 8p2+ (2p-3)(-4p-1)2p-3 = 8p2- 8p2- 2p+12p+32p-3 = 10p+32p-3.