Frazioni algebriche 1

Frazioni algebriche 1

7th Grade

16 Qs

quiz-placeholder

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Frazioni algebriche 1

Frazioni algebriche 1

Assessment

Quiz

Mathematics

7th Grade

Hard

Created by

Marta Luzzana

Used 64+ times

FREE Resource

16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

La frazione  a3a23a\frac{a-3}{a^2-3a}  si annulla per

a = 3

a = 0

non si annulla per nessun valore di a

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Quale delle seguenti espressioni NON è equivalente a  x3x4\frac{x-3}{x-4}  ?

 3x4x\frac{3-x}{4-x}  

 3xx4-\frac{3-x}{x-4}  

 x34x\frac{x-3}{4-x}  

sono tutte equivalenti alla frazione algebrica data

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Quale delle seguenti frazioni algebriche è l'opposta di  x3x4\frac{x-3}{x-4}  ?

 3x4x\frac{3-x}{4-x}  

 3xx4-\frac{3-x}{x-4}  

 x34x\frac{x-3}{4-x}  

Nessuna delle precedenti

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Quale delle seguenti frazioni è irriducibile?

a+ba2b2\frac{a+b}{a^2-b^2}

a2b2ab\frac{a^2-b^2}{a-b}

a2+b2ab\frac{a^2+b^2}{a-b}

a2+aba2b2\frac{a^2+ab}{a^2-b^2}

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Quale delle seguenti frazioni algebriche è riducibile?

a2b2a2+b2\frac{a^2-b^2}{a^2+b^2}

a2+b2a+b\frac{a^2+b^2}{a+b}

aba+b\frac{ab}{a+b}

a2b2a+b\frac{a^2-b^2}{a+b}

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 x+yxy=1         con xy\frac{x+y}{x-y}=-1\ \ \ \ \ \ \ \ \ con\ x\ne y  

Vero

Falso

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 (2x)2x(x2)=x2x         con x0,2\frac{\left(2-x\right)^2}{x\left(x-2\right)}=\frac{x-2}{x}\ \ \ \ \ \ \ \ \ con\ x\ne0,2  

Vero

Falso

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