EXAMEN MENSUAL

EXAMEN MENSUAL

9th Grade

7 Qs

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EXAMEN MENSUAL

EXAMEN MENSUAL

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

Created by

vielka Guerrero

Used 2+ times

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Resolver el siguiente trinomio cuadrado perfecto   4y2  24y + 36 =4y^2\ -\ 24y\ +\ 36\ =  

 (2y + 6)2\left(2y\ +\ 6\right)^2  

 (2y  6)2\left(2y\ -\ 6\right)^2  

 (2  6y)2\left(2\ -\ 6y\right)^2  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 Resolver el siguiente trinomio      x2 2x  24 =x^2\ -2x\ -\ 24\ =  

(x + 6) ( x - 4)

(x - 6) ( x -4)

(x -6) (x+ 4) 

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Resolver



  2y2 + 9y + 4 =2y^2\ +\ 9y\ +\ 4\ =  





(y + 4) (2y + 1)

(y + 4) ( 2y - 1)

(y - 4)  (2y + 1)

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Resolver la siguiente sustracción de cubos



 8x3   64 =8x^{3\ }\ -\ 64\ =  

 (2x + 4) (4x2  8x + 16)\left(2x\ +\ 4\right)\ \left(4x^2\ -\ 8x\ +\ 16\right)  

 (2x  4) (4x2  8x  16)\left(2x\ -\ 4\right)\ \left(4x^2\ -\ 8x\ -\ 16\right)  

 (2x  4) (4x2 + 8x + 16)\left(2x\ -\ 4\right)\ \left(4x^2\ +\ 8x\ +\ 16\right)  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Resolver la siguiente adición de cubos

 27a3 + 1 =27a^3\ +\ 1\ =  



 (3a + 1) ( 9a2  3a + 1)\left(3a\ +\ 1\right)\ \left(\ 9a^2\ -\ 3a\ +\ 1\right)  

 (3a + 1) (9a2 + 3a + 1)\left(3a\ +\ 1\right)\ \left(9a^2\ +\ 3a\ +\ 1\right)  

 (3a  1) (9a2  3a + 1)\left(3a\ -\ 1\right)\ \left(9a^2\ -\ 3a\ +\ 1\right)  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Resolver la diferencia de cuadrado

 64 m4  16 n2 =64\ m^{4\ }-\ 16\ n^2\ =  

 (8m2 + 4n) (8m2 + 4n)\left(8m^2\ +\ 4n\right)\ \left(8m^2\ +\ 4n\right)  

 (8m2 + 4n) (8m2  4n)\left(8m^2\ +\ 4n\right)\ \left(8m^2\ -\ 4n\right)  

 (8m2  4n) (8m2  4n)\left(8m^2\ -\ 4n\right)\ \left(8m^2\ -\ 4n\right)  

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 3x2 + 2x   y  2xx2  4\frac{3}{x^2\ +\ 2x}\ \ \ y\ \ \frac{2x}{x^2\ -\ 4}  

Reducir al común denominador 

 3x  6x (x + 2) (x  2) y 2x2x (x + 2) (x  2)\frac{3x\ -\ 6}{x\ \left(x\ +\ 2\right)\ \left(x\ -\ 2\right)}\ y\ \frac{2x^2}{x\ \left(x\ +\ 2\right)\ \left(x\ -\ 2\right)}  

 3x  6(x + 2) ( x  2)  y  2x(x + 2) (x  2)\frac{3x\ -\ 6}{\left(x\ +\ 2\right)\ \left(\ x\ -\ 2\right)}\ \ y\ \ \frac{2x}{\left(x\ +\ 2\right)\ \left(x\ -\ 2\right)}  

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