Quiz about Matemáticas Aporte 9° EGB.

Question 1

Indicar la respuesta correcta al calcular la suma del siguiente monomio $$3x^2-4x^2-7x^2+2x^2=$$

Accepted Answer

$$-6x^2$$

Answer

$$6x^2$$

Answer

$$16x^2$$

Answer

$$-16x^2$$

Question 2

Indicar la diferencia al restar $$10x^3yz\ de\ 109x^3yz$$

Accepted Answer

$$99x^3yz$$

Answer

$$119x^3yz$$

Answer

$$-99x^3yz$$

Answer

$$-119x^3yz$$

Question 3

Indicar el valor que falta para que este correcto el producto de monomios $$\left(-3y^5\right)\left(\ -2y^2\right)\left(\ \ \ \ \ \ \ \ \right)=-24y^8$$

Accepted Answer

$$-4y$$

Answer

$$5y$$

Answer

$$4y$$

Answer

$$-5y$$

Question 4

Indicar la respuesta correcta del producto notable:

$$\left(3a+7\right)^2\ =$$

Accepted Answer

$$9a^2+42a+49$$

Answer

$$9a^2+49a+42$$

Answer

$$49a^2+42a+9$$

Answer

$$42a^2+9a+49$$

Question 5

Desarrollar el producto

$$\left(a+3\right)\left(a+8\right)=$$

Accepted Answer

$$a^2+11a+24$$

Answer

$$24a^2+a+11$$

Answer

$$11a^2+24a+1$$

Answer

$$a^2+24a+11$$

Question 6

Obtener el cociente de:

$$\frac{3a^2b^2c^4}{abc}\ =$$

Accepted Answer

$$3abc^3$$

Answer

$$3abc$$

Answer

$$3a^3bc$$

Answer

$$3ab^3c$$

Question 7

Encontrar el cociente de:

$$\left(2x^2+4x\right)\div2x$$

Accepted Answer

$$x+2$$

Answer

$$x-2$$

Answer

$$4x+2$$

Answer

$$4x-2$$

Question 8

Ordenar en forma descendente el siguiente polinomio:

$$18a+7a^3-4a^4-6+a^5$$

Accepted Answer

$$a^5-4a^4+7a^3+18a-6$$

Answer

$$18a+7a^3-4a^4-6+a^5$$

Answer

$$-6+a^5+18a-4a^4+7a^3$$

Answer

$$a^5+18a-4a^4+7a^3-6$$

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