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LauraLima3421
@LauraLima3421
November 2019
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Determine as raizes de cada equaçao a seguir
A) x²-12x-13=0
b) 2x²+x1=0
c)x²+5x+6=0
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elnaatan2015p03l89
Δ = b²-4*a*c Δ =(-12x)²-4*1²*(-13) Δ =144-4*(-13) Δ =144+52
Δ =196
Δ =√196 Δ =14
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Δ =√196 Δ =14