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IsaahConstancia3
@IsaahConstancia3
August 2019
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Quais numeros são raizes da equaçao x²+7x=12=0
A)3 B)-4 C)0 D)-3
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mirlaisabel
X²+7x+12=0 Δ= b²- 4. a .c FÓRMULA DE BHÁSKARA
Coeficientes Δ= 7²- 4. 1. 12 x= -b
±
√Δ /2 .a
a= 1 Δ= 49- 4. 12
x'=-7+√1 /2
b=7 Δ= 49- 48 x'= -7+1 /2
c=12 Δ= 1 x'=
x'= -3
x''= -7-√Δ /2
x''= -7-1 /2
x''=
S= {x'= -3; x''= -4}
x''= -4
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mirlaisabel
Espero ter ajudado! ^^
IsaahConstancia3
o resultado int seria -4?
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Lista de comentários
Coeficientes Δ= 7²- 4. 1. 12 x= -b±√Δ /2 .a
a= 1 Δ= 49- 4. 12 x'=-7+√1 /2
b=7 Δ= 49- 48 x'= -7+1 /2
c=12 Δ= 1 x'=
x'= -3
x''= -7-√Δ /2
x''= -7-1 /2
x''= S= {x'= -3; x''= -4}
x''= -4