simplify the following:
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c.
24a (a² - 3) + 8b (b + 8) + 7(-1p + 6)
= 24a³ - 72a + 8b² + 64b - 7p + 42
= 24a³ + 8b² - 72a + 64b - 7p + 42
e.
3a (5ab + 7a²b + 4ab²) - 2a (7ab - 8a²b)
= 15a²b + 21a³b + 12a²b² - 14a²b + 16a³b
= 37a³b + 12a²b² + a²b
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