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x² - (akar1 + akar2) x + (akar1 x akar2) = 0
(3+2√5) + (3 - 2√5) = 6
(3 + 2√5)(3-2√5) = 9 - 20 = -11
Kudrat barunya
x² - 6x - 11 = 0
x² - (x₁ + x₂)x + x₁x₂ = 0
x² - (3 + 2√5 + 3 - 2√5) + (3 + 2√5)(3 - 2√5) = 0
x² - 6x + (9 - 20) = 0
x² - 6x - 11 = 0