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1. The document discusses solving linear and quadratic equations. 2. It provides examples of solving quadratic equations by factoring and using the quadratic formula. 3. The solutions to the example equations x^2 + 2y - 8 = 0 are (-4, 11) and (2, -1).
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Pembahasan
- 1. PERSAMAAN LINEAR DAN KUADRAT Oleh : 1. Indrianti Rusmana 2. Yuyun Uswatun 3. Sutihat 4. Sadam 5. Sandi
- 2. x2 – ( 3 – 2x ) = 5 x2 – 3 + 2y = 5 x2 + ay – 3 – 5 = 0 x2 + 2y – 8 = 0 ( x + 4 ) ( x – 2 ) x2 + 4 = 0 x = -4 x – 2 = 0 x = 2
- 3. D = b2 – 4 . a . c = 22 – 4 . 1 . -8 = 4 + 32 = 36 D > 0 = 2 Penyelesaian Substitusi ke pers. Linear b = 3 – 2x y = 3 – 2 . -4 = 3 + 8 = 11 ( -4, 11 )
- 4. y = 3 – 2 . 2 = 3 – 4 = -1 ( 2, -1 ) Jadi Hp = { ( -4, 11 ), ( 2, -1 ) }