1) According to the reading, what is the subject of the text? ____________________________________________________________________________________________________________________________________________________
2) What is the purpose of internet users to use the abbreviation of words?________________________________________________________________________________________________________________________________________________________
3) Can you understand what the following sentence says? ________________________________________________________________________________________________________________________________________________________4) Explain the following sentence: it is necessary to look for ways to make young people not take these learnings into formal writing, as they will be harmed both in the school phase and in the near future of professionalism.
________________________________________________________________________________________________________________________________________________________
5)Do you know what each “emoji” symbolizes? And why are we using these images so much today?
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1) Marque um x nas equações do segundo grau.
a) x + 5 = 9( ) b) x 2– 3x + 1 = 0( ) c) x 2+ 5 = 2( ) d) x 3+ 2x2= 3 ( ) e) x 3+ x2+ 2 = 0 f) 6x + 1 = 3 ( ) g) x + x2= 0( ) h) x 2 – 3 = 5x2( )
2) Verifique se 1 é raiz das equações abaixo. (Substitua o x por 1)
a) b) c)
3) Classifique cada equação do 2° grau em completa ou incompleta.
a) 
b) 
c) 
d)
4) Identifique os coeficientes (a, b e c).
a) 
b) 
c) 
d) 
e) 
f) 
g)
a) x + 5 = 9( ) b) x 2– 3x + 1 = 0( ) c) x 2+ 5 = 2( ) d) x 3+ 2x2= 3 ( ) e) x 3+ x2+ 2 = 0 f) 6x + 1 = 3 ( ) g) x + x2= 0( ) h) x 2 – 3 = 5x2( )
2) Verifique se 1 é raiz das equações abaixo. (Substitua o x por 1)
a) b) c)
3) Classifique cada equação do 2° grau em completa ou incompleta.
a) 
b) 
c) 
d)
4) Identifique os coeficientes (a, b e c).
a) 
b) 
c) 
d) 
e) 
f) 
g)
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