Tolong bantu sampe akhir

A.(a+3)(2a²-a-3)=2a³+a-3a+5a²+3a-9
=2a³ +a + 5a² - 9

B.(2a-1/a)²= (2a)² - (1/a)²
4a² - 1/a²
4a²/1 - 1/a²
4a²/1 - a²/1
3a²

C.(3p-3)² - 2(2p-1)² = 9p²-9p-9p-9-16p²-4p-4p-1
9p²-16p²-9p-9p-4p-4p-9-1
-7p²-26p-10


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