y²-17x+16=0 ∆=b²-4.a.c ∆=-17²-4.1.16 ∆=289-64 ∆=225 x'= 17+15/2=32/2=16 x''=17-15/2=2/2=1
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a=y,b=17y e c=16
Δ=17 ao quadrado-4.y.16
Δ=289-64y
Δ=225y
y²-17x+16=0 ∆=b²-4.a.c ∆=-17²-4.1.16 ∆=289-64 ∆=225 x'= 17+15/2=32/2=16 x''=17-15/2=2/2=1