Penjelasan dengan langkah-langkah:
Rumus abc
= -b ± √b² - 4ac / 2a
= -6 ± √36 - 4.3.-9 / 2.3
= -6 ± √36 - (-108) / 6
= -6 ± √36 + 108 / 6
= -6 ± √144 / 6
= -6 ± 12/6
= -6 ± 2
x1 = -6 -2 = -8
x2 = -6+2 = -4
x1² + x2² = (-8)² + (-4)² = 64+ 16 = 80
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Penjelasan dengan langkah-langkah:
Rumus abc
= -b ± √b² - 4ac / 2a
= -6 ± √36 - 4.3.-9 / 2.3
= -6 ± √36 - (-108) / 6
= -6 ± √36 + 108 / 6
= -6 ± √144 / 6
= -6 ± 12/6
= -6 ± 2
x1 = -6 -2 = -8
x2 = -6+2 = -4
x1² + x2² = (-8)² + (-4)² = 64+ 16 = 80