Jika 3 x^(2)+x y=13 dan y^(2)-(1)/(3) x y=(8)/(3) , maka

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Jika 3 x^(2)+x y=13 dan y^(2)-(1)/(3) x y=(8)/(3) , maka (x+y)^(2)-2 x y=... a. 7 c. 14 e. 23 b. 13 d. 21
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Jika 3 x^(2)+x y=13 dan y^(2)-(1)/(3) x y=(8)/(3) , maka (x+y)^(2)-2 x y=... a. 7 c. 14 e. 23 b. 13 d. 21