Quiz about Examen Mensual de Matemática de Octavo Grado

Question 1

Los productos notables son aquellos productos donde se aplica una regla fija.

Accepted Answer

Verdadero

Answer

Falso

Question 2

Base negativa exponente par, resultado positivo.

Accepted Answer

Verdadero

Answer

Falso

Question 3

Al aplicar el producto de potencias de igual base se suman los exponentes.

Accepted Answer

Verdadero

Answer

Falso

Question 4

Observe la imagen y seleccione las coordenadas del punto C:

Accepted Answer

$$\left(1,-1\right)$$

Answer

$$\left(-1,1\right)$$

Answer

$$\left(-1,-1\right)$$

Answer

$$\left(1,1\right)$$

Answer

$$\left(0,-1\right)$$

Question 5

$$(m+3)^2=$$

Accepted Answer

$$m^2+6m+9$$

Answer

$$m^2-6m+9$$

Answer

$$m^2+36$$

Answer

$$m^2-36$$

Answer

$$m^3+9m^2+27m+27$$

Question 6

$$(m+3)^3=$$

Accepted Answer

$$m^3+9m^2+27m+27$$

Answer

$$m^2+6m+9$$

Answer

$$m^2-6m+9$$

Answer

$$m^2+36$$

Answer

$$m^2-36$$

Question 7

$$(m-3)^2=$$

Accepted Answer

$$m^2-6m+9$$

Answer

$$m^2+6m+9$$

Answer

$$m^2+36$$

Answer

$$m^2-36$$

Answer

$$m^3+9m^2+27m+27$$

Question 8

$$(5a+3b)^2=$$

Accepted Answer

$$25a^2+30ab+9b^2$$

Answer

$$25a^2-30ab+9b^2$$

Answer

$$25a^2+9b^2$$

Answer

$$125a^3-225a^2b+135ab^2+27b^3$$

Question 9

$$(5a-3b)^2=$$

Accepted Answer

$$25a^2-30ab+9b^2$$

Answer

$$25a^2+30ab+9b^2$$

Answer

$$25a^2+9b^2$$

Answer

$$125a^3-225a^2b+135ab^2+27b^3$$

Question 10

$$(5a-3b)^3=$$

Accepted Answer

$$125a^3-225a^2b+135ab^2-27b^3$$

Answer

$$25a^2+30ab+9b^2$$

Answer

$$25a^2-30ab+9b^2$$

Answer

$$25a^2+9b^2$$

Question 11

$$(2x+y)^2=$$

Accepted Answer

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

Answer

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

Answer

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

Answer

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

Answer

$$8x^3+12x^{2y}+6xy^2+y^3$$

Question 12

$$(2x-y)^2=$$

Accepted Answer

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

Answer

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

Answer

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

Answer

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

Answer

$$8x^3+12x^{2y}+6xy^2+y^3$$

Question 13

$$(x+y)(x-y)=$$

Accepted Answer

$$x^2-y^2$$

Answer

$$x^2+y^2$$

Answer

$$x^2-2xy-y^2$$

Answer

$$x^2-2xy+y^2$$

Answer

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

Question 14

$$(x+y)^2=$$

Accepted Answer

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

Answer

$$x^2+y^2$$

Answer

$$x^2-y^2$$

Answer

$$x^2-2xy-y^2$$

Answer

$$x^2-2xy+y^2$$

Question 15

$$(m+9)(m-9)=$$

Accepted Answer

$$m^2-81$$

Answer

$$m^2-18m+81$$

Answer

$$m^2-18m-81$$

Answer

$$m^2+81$$

Answer

$$m^2+18m+81$$

Question 16

$$(m-9)^2=$$

Accepted Answer

$$m^2-18m+81$$

Answer

$$m^2-18m-81$$

Answer

$$m^2-81$$

Answer

$$m^2+81$$

Answer

$$m^2+18m+81$$

Question 17

$$(x+4)(x-4)=$$

Accepted Answer

$$x^2-16$$

Answer

$$x^2-8$$

Answer

$$x^2+8x+16$$

Answer

$$x^2-8x+16$$

Answer

$$x^2-64$$

Question 18

$$(x+4)^2=$$

Accepted Answer

$$x^2+8x+16$$

Answer

$$x^2-16$$

Answer

$$x^2-8$$

Answer

$$x^2-8x+16$$

Answer

$$x^2-64$$

Question 19

$$(m-3)^3=$$

Accepted Answer

$$m^3-9m^2+27m-27$$

Answer

$$m^2-9$$

Answer

$$m^3-9m^2+27m+27$$

Answer

$$3m^3-9m^2+27m-27$$

Answer

$$m^3+9m^2+27m+27$$

Question 20

$$(k-7)(k+10)=$$

Accepted Answer

$$k^2+3k-70$$

Answer

$$k^2+70k-3$$

Answer

$$k^2+17k-70$$

Answer

$$k^2+7k-17$$

Answer

$$k^2-70$$

Question 21

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

Accepted Answer

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

Answer

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

Answer

$$x^2-6x-9$$

Answer

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

Answer

$$x^2-9$$

Question 22

$$\left(m-6\right)\left(m-5\right)=$$

Accepted Answer

$$m^2-11m+30$$

Answer

$$m^2-5m+11$$

Answer

$$m^2-30$$

Answer

$$m^2+30m-11$$

Answer

$$m^2-6m-5$$

Question 23

$$(x-1)^3=$$

Accepted Answer

$$x^3-3x^2+3x-1$$

Answer

$$x^3+3x-1$$

Answer

$$x^3-1$$

Answer

$$x^3+1$$

Question 24

$$\left(x+5\right)\left(x-5\right)=$$

Accepted Answer

$$x^2-25$$

Answer

$$x^2-10x+25$$

Answer

$$x^2+10x+25$$

Answer

$$x^2+25$$

Answer

$$\left(x-5\right)^2$$

Question 25

$$y^2-13y+36$$ es el resultado de:

Accepted Answer

$$\left(y-4\right)\left(y-9\right)$$

Answer

$$\left(y-6\right)^2$$

Answer

$$\left(y-12\right)\left(y-3\right)$$

Answer

$$\left(y-6\right)\left(y+6\right)$$

Answer

No se puede resolver

Question 26

$$(x+6)(x-4)=$$

Accepted Answer

$$x^2+2x-24$$

Answer

$$x^2+2x+24$$

Answer

$$x^2+10x+24$$

Answer

$$x^2-2x-24$$

Answer

$$x^2-10x+24$$

Question 27

$$(2w-1)(2w-5)=$$

Accepted Answer

$$4w^2-12w+5$$

Answer

$$4w^2-6w+5$$

Answer

$$w^2-12w+5$$

Answer

$$w^2-6w+5$$

Answer

$$4w^2-5$$

Question 28

$$-4a-5b-(3a-8b)=$$

Accepted Answer

$$-7a+3b$$

Answer

$$a+3b$$

Answer

$$-7a+13b$$

Answer

$$-7a-13b$$

Answer

$$-a-13b$$

Question 29

$$(x+10)(x-10)=$$

Accepted Answer

$$x^2-100$$

Answer

$$x^2+20x+100$$

Answer

$$x^2+20x+100$$

Answer

$$x^2-10x+100$$

Answer

$$x^2+100$$

Question 30

$$\sqrt[3]{\sqrt[]{64x^{12}y^{18}}}=$$

Accepted Answer

$$2x^2y^3$$

Answer

$$4x^2y^3$$

Answer

$$8x^2y^3$$

Answer

$$8x^4y^6$$

Answer

$$2x^4y^6$$

Question 31

$$a-[-a(a-b)+(a^2-5b)]=$$

Accepted Answer

$$a-ab+5b$$

Answer

$$a+2a^2-ab-5b$$

Answer

$$a-a^2-ab+5b$$

Answer

$$a+ab+5b$$

Answer

$$a+ab-5b$$

Question 32

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

Accepted Answer

$$-y^2$$

Answer

$$-2x^2-5y^2$$

Answer

$$-6x^2+y^2$$

Answer

$$4x^2+7y^2$$

Answer

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

Examen Mensual de Matemática de Octavo Grado

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