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Rezolvati ecuatia :
2y² - y - 3 = 0


Răspuns :

∆=b²-4ac ∆=(-1)²-4*2*(-3) ∆=1+24 ∆=25 √∆=5 x1=-b-√∆ supra 2a X1=1-5 supra 2*2 X1=-4 supra 4 X1= -1 X2=-b+√∆ supra 2a X2=1+5 supra 2a X2=6
2y²-y-3=0
Δ=b²-4ac  
Δ=(-1)²-4×2×(-3)=1+24=25
x1=-b-√Δ/2a
x1=1-√25/2×1=1-5/2=-2
x2=-b+√Δ/2a
x2=1+√25/2×1=1+5/2=3