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-3x²-3x-2x+2 = -2x-1
-3x²-5x+2= -2x-1 /+2x
-3x²-3x+2=-1 /+1
-3x²-3x+3=0
Δ=(-3)²-4*(-3)*3 = 9+ 36 = 45
√Δ = √45 = 3√5
x₁ = 3 - 3√5/ -9
x₂ = 3 + 3√5 / - 9