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Polinómios

Authored by Arlinda Oliveira

Mathematics

8th Grade

Used 63+ times

Polinómios
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12 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 (2x+5yz)+(6x4y+7z) \left(2x+5y-z\right)+\left(-6x-4y+7z\right)\   é igual a:

 4x+6y+6z-4x+6y+6z  

 4x+y+6z4x+y+6z  

 4xy+6z-4x-y+6z  

 4x+y+6z-4x+y+6z  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Efetuando a operação  5xy×(3xy)-5xy\times\left(3x-y\right)  obtém-se:

 15x2yxy215x^2y-xy^2  

 15x2y+5xy2-15x^2y+5xy^2  

 8xy5xy8xy-5xy  

 15xy25x2y2-15xy^2-5x^2y^2  

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Simplificando  (2x4)(3x1)\left(2x-4\right)\left(-3x-1\right)  obtém-se:

 6x212x46x^2-12x-4  

 6x2+12x+4-6x^2+12x+4  

 6x2+10x46x^2+10x-4  

 6x2+10x+4-6x^2+10x+4  

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Representa na forma de polinómio reduzido: (3x22x)(2x2x)\left(3x^2-2x\right)-\left(-2x^2-x\right) 

 5x23x5x^2-3x  

 x2xx^2-x  

 x23xx^2-3x  

 5x2x5x^2-x  

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 (4x3)(3x+2)\left(4x-3\right)\left(3x+2\right)  é igual ao polinómio reduzido:

 12x2x612x^2-x-6  

 7x217x67x^2-17x-6  

 12x2+17x+612x^2+17x+6  

 7x2x67x^2-x-6  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

      4x2×2x54x^2\times2x^5   é igual a:

 8x78x^7  

 8x38x^3  

 8x108x^{10}  

Não se podem multiplicar porque não têm a mesma parte literal.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 2x2y +7yx2=-2x^2y\ +7yx^2=  

Não se pode somar

 5x4y25x^4y^2  

 5y2x45y^2x^4  

 5x2y5x^2y  

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