integral 2x - 3 dx = 12
x² - 3x = 12
b² - 3b - (-2) = 12
b² - 3b + 2 - 12 = 0
b² - 3b - 10 = 0
(b - 5) (b + 2) = 0
b1 = 5
b2 = - 2
karena b > 0 maka b = 5
jawaban ; D
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integral 2x - 3 dx = 12
x² - 3x = 12
b² - 3b - (-2) = 12
b² - 3b + 2 - 12 = 0
b² - 3b - 10 = 0
(b - 5) (b + 2) = 0
b1 = 5
b2 = - 2
karena b > 0 maka b = 5
jawaban ; D