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Kalikan ruas kiri dengan kanan
(2p x 4p) + (2p x -5) + (3 x 4p) + ( 3 x -5)
8p² - 10p + 12p + (-15)
8p² + 2p - 15
2p dikali 4p = 8p^2
2p dikali -5 = -10p
3 dikali 4p = 12p
3 dikali -5 = -15
maka hasilnya 8p^2 + (-10p) + 12p + (-15) = 8p^ -10p +12p -15 =8p^2 + 2p -15
jadi jawabannya 8p^2 +2p -15
semoga paham ya... makasih