October 2018 1 70 Report
Tolong bantu yaa
soal 1. Jika akar-akar persamaan kuadrat ax^2 + 14x - 5 = 0 adalah -5 dan b., maka nilai dari 2a^2 - 6ab + 9b^2 = ?
soal 2. Jika segitiga ABC mempunyai ukuran AB=6 dari AC=BC=akar 10, maka nilai sin(A+C) adalah...?
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