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9th Grade

33 Qs

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Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

Maria Alice Areias

FREE Resource

33 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual dos seguintes polinómios é equivalente à expressão  (x+3)2\left(x+3\right)^2 ?

 x2 +3x+9x^{2\ }+3x+9  

 x2+6x+9x^2+6x+9  

 x26x+9x^2-6x+9  

 x2 +9x^{2\ }+9  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual dos seguintes polinómios é equivalente à expressão (x7)2\left(x-7\right)^2 

 x249x^2-49  

 x2 +14x+49x^{2\ }+14x+49  

 x214x+49x^2-14x+49  

 x214x49x^2-14x-49  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A expressão  (x1)(x+1)\left(x-1\right)\left(x+1\right)  é equivalente:

 x21x^2-1  

 x2+1x^2+1  

 x22x+1x^2-2x+1  

 x2+2x+1x^2+2x+1  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual dos seguintes polinómios é equivalente à expressão  (2y+5)(2y5)\left(2y+5\right)\left(2y-5\right) ?

4y2+254y^2+25

4y210y+254y^2-10y+25

4y2+10y+254y^2+10y+25

4y2254y^2-25

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Aplicando os casos notáveis da multiplicação, a simplificação da expressão   (2x+6)2(-2x+6)^2  é:

 2x212x+62x^2-12x+6  

 4x2364x^2-36  

 4x212x+364x^2-12x+36  

 4x224x+364x^2-24x+36  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Aplicando os casos notáveis da multiplicação, a simplificação da expressão        (53+x) (53x)\left(\frac{5}{3}+x\right)\ \left(\frac{5}{3}-x\right)  é:

 x2+103x+256x^2+\frac{10}{3}x+\frac{25}{6}  

 106x2\frac{10}{6}-x^2  

 259x2\frac{25}{9}-x^2  

 259+x2 \frac{25}{9}+x^{2\ }  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual dos seguintes polinómios é igual a (x3)2x2\left(x-3\right)^2-x^2  :

-9

9

 6x9-6x-9  

 6x+9-6x+9  

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