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8º Casos notáveis da multiplicação

Authored by Susana Silva

Mathematics

5th - 9th Grade

Used 8+ times

8º Casos notáveis da multiplicação
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14 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual das expressões representa  (12x)2\left(1-2x\right)^2  

 14x +2x2 1-4x\ +2x^2\   

 14x+2x21-4x+2x^2  

 14x + 4x21-4x\ +\ 4x^2  

 14x4x21-4x-4x^2  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual das expressões representa  (14x)(1+4x)\left(1-4x\right)\left(1+4x\right)  

 14x21-4x^2  

 116x21-16x^2  

 (14x)2\left(1-4x\right)^2  

 (1+4x)2\left(1+4x\right)^2  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual das expressões representa  a2+2ab+b2a^2+2ab+b^2  

 a2+b2a^2+b^2  

 a2b2a^2-b^2  

 (a+b)2\left(a+b\right)^2  

 (ab)2\left(a-b\right)^2  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ter  x2a2  x^2-a^2\ \    é o mesmo que:

 (xa)2\left(x-a\right)^2  

 (xa)(xa)\left(x-a\right)\left(x-a\right)  

 (xa)(x+a)\left(x-a\right)\left(x+a\right)  

 (ax)(a+x)\left(a-x\right)\left(a+x\right)  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

O trinómio  x214x+49x^2-14x+49  é o mesmo que:

 (x7)2\left(x-7\right)^2  

 (x7)(x+7)\left(x-7\right)\left(x+7\right)  

 x249x^2-49  

 (x+7)2\left(x+7\right)^2  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

O trinómio  10020x +x2100-20x\ +x^2  é o mesmo que:

 (10x)(10+x)\left(10-x\right)\left(10+x\right)  

 (10x)2\left(10-x\right)^2  

 (10+x)2\left(10+x\right)^2  

 100x2100-x^2  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual dos polinómios é equivalente a  (x4)2\left(x-4\right)^2  ?

 x28x+16x^2-8x+16  

 x216x^2-16  

 x2+8x+16x^2+8x+16  

 x2+16x^2+16  

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