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= 2p(2p - 5q)
= 2 . (9,5) . (2 . 9,5 - 5 . 3)
= 19 . (19 - 15)
= 19 . 4
= 76
nilainya : 4( 90,25) - 10 x 9,5 x 3 = 361 - 285 =76