Quiz about identités remarquables

Question 1

$$\left(a+b\right)^2=$$

Accepted Answer

$$a^2+2ab+b^2$$

Answer

$$a^2+b^2$$

Answer

$$a^2+ab+b^2$$

Answer

$$a^2-b^2$$

Question 2

$$\left(a-b\right)^2=$$

Accepted Answer

$$a^2-2ab+b^2$$

Answer

$$a^2-b^2$$

Answer

$$a^2-ab+b^2$$

Answer

$$a^2+2ab+b^2$$

Question 3

$$a^2-b^2=$$

Accepted Answer

$$\left(a+b\right)\left(a-b\right)$$

Answer

$$a^2+b^2$$

Answer

$$\left(a-b\right)^2$$

Answer

$$a^2+2ab+b^2$$

Question 4

Question 4.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 5

Question 5.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 6

Question 6.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 7

$$\left(x+7\right)^2$$ =

Accepted Answer

$$x^2+14x+49$$

Answer

$$x^2+14x-49$$

Answer

$$x^2-14x+49$$

Answer

$$x^2+49$$

Question 8

$$\left(x-3\right)\left(x+3\right)=$$

Accepted Answer

$$x^2-9$$

Answer

$$x-3$$

Answer

$$x^2-3$$

Answer

$$x^2+9$$

Question 9

(5x-2)(5x+2)

Accepted Answer

$$25x^2-4$$

Answer

$$5x^2-4$$

Answer

$$25x^2-2$$

Answer

$$25x^2+4$$

Question 10

$$\left(x-6\right)^2=$$

Accepted Answer

$$x^2-12x+36$$

Answer

$$x^2+12x+36$$

Answer

$$x^2+36$$

Answer

$$x^2+12x-36$$

Question 11

$$\left(7x-3\right)^2=$$

Accepted Answer

$$49x^2-42x+9$$

Answer

$$49x^2-9$$

Answer

$$49x^2+42x+9$$

Answer

$$49x^2+42x-9$$

Question 12

Si $$\ \left(x-\alpha\right)^2=x^2-8x+16,\ $$ alors

Accepted Answer

$$\alpha=4$$

Answer

$$\alpha=2$$

Answer

$$\alpha=8$$

Answer

$$\alpha=16$$

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