tentukan hp dari persamaan kuadrat berikut 2x^2–8x–6=0
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Penjelasan dengan langkah-langkah:
[tex]2x^{2} -8x-6 = 0\\a = 2\\b = -8\\c = -6\\\\x_{1,2} = \frac{-b ± \sqrt{b^{2} -4ac}}{2a} \\x_{1,2} = \frac{-(-8)±\sqrt{(-8^{2})-4.2.(-6) } }{2(2)} \\x_{1,2} = \frac{8±\sqrt{112} }{4} \\x_{1} = 2+\sqrt{112} \: | \:x_{2}=2-\sqrt{112}[/tex]
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