a = 3
b = 0
c = -12
Δ = 0² - 4 . 3 . -12
Δ = 144
x = -0 +/- √144
----------------
2.3
x₁ = +12 / 6 = 2
x₂ = -12 / 6 = -2
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a = 3
b = 0
c = -12
Δ = 0² - 4 . 3 . -12
Δ = 144
x = -0 +/- √144
----------------
2.3
x₁ = +12 / 6 = 2
x₂ = -12 / 6 = -2