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Kaiane0506
@Kaiane0506
December 2019
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Resolva a equação de 2 grau:
(x-1) (2x+3)=0
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2x²-3x-2x-3=0 x=-b+-√49/2a
2x²-5x-3=0
a=2 b=-5 c= -3 x1=5+7/4 x2=5-7/4
Δ=b²-4ac x1=12/4 x2=-2/4(simplificando por 2)
Δ=(-5²)-4.2.(-3) x=3 x2=-1/2
Δ=25+24
Δ=49
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2x²-5x-3=0
a=2 b=-5 c= -3 x1=5+7/4 x2=5-7/4
Δ=b²-4ac x1=12/4 x2=-2/4(simplificando por 2)
Δ=(-5²)-4.2.(-3) x=3 x2=-1/2
Δ=25+24
Δ=49