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HelenaBeatriz12222
@HelenaBeatriz12222
September 2019
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Resolva as equações :
(+×1)2elevado =7+×
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marianasilva39
(x+1)^2=7+x
(x+1).(x+1)=7+x
x^2+x+x+1=7+x
x^2+2x+1=7+x
x^2+2x-x+1-7=0
x^2+x-6=0
a=1 b=1 c= -6
x= -b+-RAIZ QUADRADA b^2-4.a.c/2a
x= -(-6)+-RAIZ QUADRADA 1^2-4.1.(-6)/2.1
x= 6+-RAIZ QUADRADA 1+24/2
x= 6+-RAIZ QUADRADA 25/2
x=6+-5/2
x1=6+5/2
x1=11/2
x2=6-5/2
x2=1/2
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Lista de comentários
(x+1).(x+1)=7+x
x^2+x+x+1=7+x
x^2+2x+1=7+x
x^2+2x-x+1-7=0
x^2+x-6=0
a=1 b=1 c= -6
x= -b+-RAIZ QUADRADA b^2-4.a.c/2a
x= -(-6)+-RAIZ QUADRADA 1^2-4.1.(-6)/2.1
x= 6+-RAIZ QUADRADA 1+24/2
x= 6+-RAIZ QUADRADA 25/2
x=6+-5/2
x1=6+5/2
x1=11/2
x2=6-5/2
x2=1/2