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Jawaban Yang Tepat Adalah
Rumus D = b^2 – 4ac
(2x)^2-4(1)(-15)=0
4x^2-4+60=0
4x^2+56=0
4x^2 = -56
x^2 = -14
x = √14
jadi nilai x = positif negarif √14
(2x)^2-4(1)(-15)=0
4x^2-4+60=0
4x^2+56=0
4x^2 = -56
x^2 = -14
x = √14
jadi nilai x = positif negarif √14
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