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2(2)^2 - (3a-1)(2) + 5a + 4 = 0
8 - 6a + 2 + 5a + 4=0
14 - a = 0
a = 14
2(2)² - (3a - 1)2 + 5a + 4 = 0
8 - 6a + 2 + 5a + 4 = 0
14 - a = 0
maka a = 14
semoga membantu ^_^