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(-3p+2)² - 4(p-1)(2p+3) > 0
9p²- 12 p + 4 -4(2p²+p-3) >0
9p²- 12 p + 4 -8p²-4p+3 >0
p² - 16p + 7 > 0
(p-8)² > 57
8 -√57> p > 8+√57
"tidak semua p "