Examen de conocimiento

Examen de conocimiento

University

34 Qs

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VDP 13 April 2020

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Examen de conocimiento

Examen de conocimiento

Assessment

Quiz

Mathematics

University

Practice Problem

Hard

Created by

Diego Herrera

Used 42+ times

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34 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La solución de  (5x+3)(5x3):\left(\sqrt{5x}+\sqrt{3}\right)\left(\sqrt{5x}-3\right): 

 5+3\sqrt{5}+\sqrt{3}  

 x+3x+3  

 5x235x^2-3  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La solución de (2x3+3y2)2\left(\frac{\sqrt{2x}}{3}+\frac{\sqrt{3y}}{2}\right)^2   

 13x2+86xy+12y2\frac{1}{3}x^2+\frac{8}{6}xy+\frac{1}{2}y^2  

 2x29+43xy+34y2\frac{2x^2}{9}+\frac{4}{3}xy+\frac{3}{4}y^2  

 x2+xy+y2x^2+xy+y^2  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Simplifica x3y3x3+x2y+xy2\frac{x^3-y^3}{x^3+x^2y+xy^2}   

 xyx\frac{x-y}{x}  

 x2y2xy\frac{x^2-y^2}{xy}  

 x2xyy2x+y\frac{x^2-xy-y^2}{x+y}  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Simplifica  x2y2y3x3\frac{x^2-y^2}{y^3-x^3}  

 xyy2x2\frac{x-y}{y^2-x^2}  

 xyx2+xy+y2-\frac{x-y}{x^2+xy+y^2}  

 y2xy+x2xy\frac{y^2-xy+x^2}{x-y}  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Simplifica x2+4x+32x2+5x+3\frac{x^2+4x+3}{2x^2+5x+3}   

 x+32x+3\frac{x+3}{2x+3}  

 2x+3x+3\frac{2x+3}{x+3}  

 x+1x+1  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La suma de x+ax+3a+3a2x2x29a2\frac{x+a}{x+3a}+\frac{3a^2-x^2}{x^2-9a^2}   

 2axx29a2-\frac{2ax}{x^2-9a^2}  

 x+ax+3a\frac{x+a}{x+3a}  

 3a2x23a^2-x^2  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

al multiplicar:

 9x227x3 ×3x3+x\frac{9-x^2}{27-x^3}\ \times\frac{3-x}{3+x}  

 3xx2+3x+9\frac{3-x}{x^2+3x+9}  

 3+xx2+x+3\frac{3+x}{x^2+x+3}  

 x1x+3\frac{x-1}{x+3}  

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