Quiz about Cuadrado de binomio

Question 1

$$\left(x+3\right)^2=$$

Accepted Answer

$$x^2+6x+9$$

Answer

$$x^2+6$$

Answer

$$x^2+9$$

Answer

$$x^2+3x+9$$

Question 2

$$\left(a-7\right)^2=$$

Accepted Answer

$$a^2-14a+49$$

Answer

$$a^2+14a+49$$ $$a^2+49$$

Answer

$$a^2-7a+49$$

Question 3

$$\left(3x+4\right)^2=$$

Accepted Answer

$$9x^2+24x+16$$

Answer

$$3x^2+24x+16$$

Answer

$$9x^2+12x+16$$

Answer

$$9x^2+12x+8$$

Question 4

$$\left(2a-7b\right)^2=$$

Accepted Answer

$$4a^2-28ab+49b^2$$

Answer

$$2a^2-14ab+7b^2$$

Answer

$$4a^2-14ab+49b^2$$

Answer

$$4a^2-28ab+49$$

Question 5

$$2^{-3\ }=\ $$

Accepted Answer

$$\frac{1}{8}$$

Answer

6

Answer

-6

Answer

$$-\frac{1}{8}$$

Question 6

$$\left(\frac{2}{3}\right)^3=$$

Accepted Answer

$$\frac{8}{27}$$

Answer

$$\frac{6}{9}$$

Answer

$$\frac{27}{8}$$

Answer

$$\frac{6}{27}$$

Question 7

$$\left(-5\right)^{-2}=$$

Accepted Answer

$$\frac{1}{25}$$

Answer

10

Answer

$$-\frac{1}{25}$$

Answer

-10

Question 8

$$2^6\cdot5^6=$$

Accepted Answer

$$10^6$$

Answer

$$10^{12}$$

Answer

$$10^{36}$$

Answer

$$7^6$$

Question 9

$$\left(\frac{3}{4}\right)^8\cdot\left(\frac{5}{7}\right)^8=$$

Accepted Answer

$$\left(\frac{15}{28}\right)^8$$

Answer

$$\left(\frac{21}{20}\right)^{16}$$

Answer

$$\left(\frac{21}{20}\right)^8$$

Answer

$$\left(\frac{15}{28}\right)^{16}$$

Question 10

3(a+b) =

Accepted Answer

3a+3b

Answer

3ab

Answer

3a+b

Answer

$$a^3+b^3$$

Question 11

4x+2y+x-5y =

Accepted Answer

5x-3y

Answer

2xy

Answer

5x-7y

Answer

$$4x^2-3$$

Question 12

$$\left(x+y\right)^2+\left(x-y\right)^2=$$

Accepted Answer

$$2x^2+2y^2$$

Answer

4xy

Answer

$$2x^2+4xy+2y^2$$

Answer

$$2x^2+4xy$$

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