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Bab Persamaan KuadratMatematika SMP Kelas VIII
3x² + 6x + 4 = 0
a = 3; b = 6; c = 4;
penjumlahannya
= (p + q) + (p x q)
= -b/a + c/a
= -6/3 + 4/3
= -2/3
perkaliannya
= (p + q) x (p x q)
= -b/a x c/a
= -6/3 x 4/3
= -8/3
x² - penjumlahan x + perkalian = 0
x² - (-2/3) x + (-8/3) = 0
✩ dikalikan 3 ✩
3x² + 2x - 8 = 0
◎◎ A ◎◎