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Verified answer
= -(b² - 4ac) / 4a6 = -( [-4]² - 4k) / 4
6 = (-16 + 4k) / 4
6 = -4 + k
k = 10
Fungsi Kuadrat tsb adalah
f(x) = x²- 4x + 10
f(2) = 2² - 4(2) + 10
f(2) = 6