Equações 2° grau

Equações 2° grau

8th - 9th Grade

10 Qs

quiz-placeholder

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Equações 2° grau

Equações 2° grau

Assessment

Quiz

Mathematics

8th - 9th Grade

Hard

Created by

Ana Mota

Used 72+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual o desenvolvimento correto de (3x7)2\left(3x-7\right)^2  ?

 9x2499x^2-49  

 9x221x499x^2-21x-49  

 3x242x+493x^2-42x+49  

 9x242x+499x^2-42x+49  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Quais os coeficientes da equação  x26x2=0x^2-6x-2=0  

 a=1,b=6, c=2a=1,b=-6,\ c=-2  

 a=0, b=6, c=2a=0,\ b=-6,\ c=-2 

 a=1, b=6, c=2a=1,\ b=-6,\ c=2 

 a=0, b=6, c=2a=0,\ b=-6,\ c=2 

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Quais são as soluções da equação  x2=100x^2=100 ?

 50,50-50,50  

 1010  

Não tem soluções reais

 10,10-10,10  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Quais as soluções da equação  x2+9=0x^2+9=0 ?

  99  e  9-9  

 33  e  3-3  

Não tem raízes reais

 00  e  33  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Como podemos escrever esta equação na forma canónica?

3x211x4=03x^2-11x-4=0

x25x4=0x^2-5x-4=0

2x25x4=02x^2-5x-4=0

3x2+11x4=03x^2+11x-4=0

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Qual das expressões representa a área do retângulo?

x23x+2x^2-3x+2

x22x^2-2

x2+2x^2+2

x2x2x^2-x-2

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Quais as soluções da equação 2x2  +3x= 02x^2\ \ +3x=\ 0  ?

 22   e  3-3  

 00  e  32\frac{3}{2}  

 00  e  33  

 00  e  32-\frac{3}{2}  

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