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Verified answer
Kelas 10 MatematikaBab Persamaan Kuadrat
x² + 9x - 2 = 0
a = 1; b = 9; c = -2
α²β + αβ²
= αβ (α + β)
= c/a . (-b/a)
= (-2/1) . (-9/1)
= 18