Quadrado de um binómio

Quadrado de um binómio

8th - 9th Grade

10 Qs

quiz-placeholder

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Quadrado de um binómio

Quadrado de um binómio

Assessment

Quiz

Mathematics

8th - 9th Grade

Hard

Created by

Maria Fernandes

Used 37+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Observa a figura e seleciona a opção que indica a área do quadrado.

4x2+x +44x^2+x\ +4

2x2+4x+42x^2+4x+4

4x2+4x+44x^2+4x+4

2x2+4x+22x^2+4x+2

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Assinala as opções verdadeiras.

(2 + b) ×(2 + b) = 4 + b2\left(2\ +\ b\right)\ \times\left(2\ +\ b\right)\ =\ 4\ +\ b^2

(3x)2=x26x+9\left(3-x\right)^2=x^2-6x+9

(2a+b)2=2a2+b2+4ab\left(2a+b\right)^2=2a^2+b^2+4ab

(2+4x)2=16x2+16x+4\left(2+4x\right)^2=16x^2+16x+4

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Seleciona a igualdade que não está correta.

(3x1)2=9x36x + 1\left(3x-1\right)^2=9x^3-6x\ +\ 1

(4x + 1)×(4x+1) = 16x2+8x +1\left(4x\ +\ 1\right)\times\left(4x+1\right)\ =\ 16x^2+8x\ +1

(2x1)2= 4x24x+1\left(2x-1\right)^2=\ 4x^2-4x+1

(x+1)2=x2+2x+1\left(x+1\right)^2=x^2+2x+1

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Quais das afirmações abaixo estão corretas?

(ab)×(ab) = b2a2\left(a-b\right)\times\left(a-b\right)\ =\ b^2-a^2

(a+b)×(a+b)=a2+b2\left(a+b\right)\times\left(a+b\right)=a^2+b^2

(a+b)2=a2+b2+2ab\left(a+b\right)^2=a^2+b^2+2ab

(a+b)2=a2+b2+ab\left(a+b\right)^2=a^2+b^2+ab

(ab)2=a2+b22ab\left(a-b\right)^2=a^2+b^2-2ab

5.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Aplicando a fórmula do quadrado do binómio,

 (2x+3)2=4x2+12x+9\left(2x+3\right)^2=4x^2+12x+9  

verdadeiro

falso

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Aplicando a fórmula do quadrado do binómio,

 (6x2)2\left(6x-2\right)^2  é igual a:

 6x246x^2-4  

 36x224x+436x^2-24x+4  

 36x2+24x+436x^2+24x+4  

 6x212x+46x^2-12x+4  

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Qual das seguintes igualdades é falsa?

(x5)2=x210x+25\left(x-5\right)^2=x^2-10x+25

(2x+4)2=4x2+16x+6\left(2x+4\right)^2=4x^2+16x+6

(5x2)2=5x220x+25\left(5x-2\right)^2=5x^2-20x+25

(x+3)2=x2+6x+9\left(x+3\right)^2=x^2+6x+9

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