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= x pangkat 2 + 6x + 8
b.(4p+5)(2p-5) = 8p pangkat 2 - 20p + 10p - 25
= 8p pangkat - 10p -25
c. (4+2m)(m-8) = 4m - 32 + 2m pangkat 2 - 16m
= -12m + 2m pangkat 2 -32