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96-4a-a²=-a²-4a+96=(-a+8)(a+12)
48a²-3a=3a(16a-1)
(2p+5q)³+pq(p-2q)=(2p)³+3(2p)²5q+3(2p)(5q)²+(5q)³+p²q-2pq²=8p³+60p²q+150pq²+125q³+p²q-2pq²=8p³+61p²q+148pq²
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