Quiz about Repaso de mates

Question 1

Al resolver $$\left(x^2\right)^{-3}\ x^7$$ la respuesta es

Accepted Answer

$$x$$

Answer

$$x^2$$

Answer

$$\frac{1}{x^2}$$

Answer

$$x^{-2}$$

Question 2

Al resolver $$\left(x^{-3}\ y\right)^{-2}\ \left(x^{-4}\ y^{-1}\right)^{-1}$$

Accepted Answer

$$\frac{x^{10}}{y}$$

Answer

$$\frac{y}{x^{10}}$$

Answer

$$\frac{y^{10}}{x}$$

Answer

$$\frac{x}{y^{10}}$$

Question 3

$$\sqrt[]{18ab^3}$$ es igual a

Accepted Answer

$$3b\ \sqrt[]{2ab}$$

Answer

$$b\ \sqrt[]{2 imes3ab}$$

Answer

$$3ab\ \sqrt[]{2b}$$

Answer

$$2b\ \sqrt[]{3ab}$$

Question 4

$$\left(x+3\right)^{\frac{2}{3}}$$ es igual a

Accepted Answer

$$\sqrt[3]{\left(x+3\right)^2}$$

Answer

$$x^{\frac{2}{3}}+3^{\frac{2}{3}}$$

Answer

$$\sqrt[2]{\left(x+3\right)^3}$$

Answer

$$x^{\frac{3}{2}}+3^{\frac{3}{2}}$$

Question 5

$$\sqrt[]{\left(x^4+y\right)^2}$$ es igual a

Accepted Answer

$$\left(x^4+y\right)$$

Answer

$$\sqrt[]{\left(x^4\right)^2\ +\left(y\right)^2}$$

Answer

$$\sqrt[]{\left(x^4\right)+\left(y\right)^2}$$

Answer

$$\left(x^4+y\right)^4$$

Question 6

$$2\ \sqrt[]{x+3y}-\ \sqrt[]{9x+27y}$$ es igual a

Accepted Answer

$$-\ \sqrt[\ ]{x+3y}$$

Answer

$$5\ \sqrt[]{x+3y}$$

Answer

1

Answer

0

Question 7

$$\frac{\sqrt[]{a}-\sqrt[]{b}}{\sqrt[]{a}-\sqrt[]{b}}$$ es igual a

Accepted Answer

1

Answer

$$\frac{a+2\ \sqrt[]{ab}+b}{a-b}$$

Answer

0

Answer

$$\frac{a-2\ \sqrt[]{ab}-b}{a+b}$$

Question 8

$$\left(a^3b\ \sqrt[]{a}\right)\div\left(3a\ \sqrt[]{b^{-1}}\right)$$

Accepted Answer

$$\frac{a^2b}{3}\sqrt[]{ab}$$

Answer

1

Answer

0

Answer

$$3a^2b\ \sqrt[]{\frac{a}{b}}$$

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