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a=3
b=5
c=(-2)
Δ=b²-4ac
Δ=25+24
Δ=49
√Δ=7
x₁= -b-√Δ/2a = -5-7/6 = -12/6 = -2
x₂= -b+Δ/2a= -5+7/6 = 2/6 = ⅓
a=3
b=5
c=-2
Δ=-b²-4 *a*c
Δ=(-5)²-4*3*(-2)
Δ=25+24
Δ=49
√Δ=7
x1=-b-√Δ/2*a=-5-7/2*3=-12/6=-2
x2=-b+√Δ/2*a=-5+7/2*3=2/6=1/3