Działania na wyrażeniach wymiernych, dziedzina..

Działania na wyrażeniach wymiernych, dziedzina..

1st - 6th Grade

7 Qs

quiz-placeholder

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Działania na wyrażeniach wymiernych, dziedzina..

Działania na wyrażeniach wymiernych, dziedzina..

Assessment

Quiz

Mathematics

1st - 6th Grade

Practice Problem

Hard

Created by

Kinga Barańska

Used 46+ times

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7 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Wyznacz dziedzinę wyrażenia:

 

 2x1x24\frac{2x-1}{x^2-4}  

D: x e R\ { 12\frac{1}{2}  }

D: x e R\ { 12\frac{1}{2}  ; 2}

D: x e R\ {-2; 2}

D: x e R\ {2}

2.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Skróć wyrażenie:


 

 6x33x2(2x1)(x3)\frac{6x^3-3x^2}{\left(2x-1\right)\left(x-3\right)}  

 6x2x2x1\frac{6x^2-x}{2x-1}  

 2x2x2x1\frac{2x^2-x}{2x-1}  

 3x2x3\frac{3x^2}{x-3}  

 3x23xx3\frac{3x^2-3x}{x-3}  

3.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Wykonaj działanie:

 4x2x2x24x+2:2xx2\frac{4x^2}{x-2}\cdot\frac{x^2-4}{x+2}:\frac{2x}{x-2}  

 8x2x2\frac{8x^2}{x-2}  

 2x24x2x^2-4x  

 2x222x^2-2  

 4xx24\frac{4x}{x^2-4}  

4.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Wykonaj działanie

 25+2y+510y23+y22y\frac{-2}{5}+\frac{2y^{ }+5}{10y^2}-\frac{3+y^2}{2y}  

 513y4y25y310y2\frac{5-13y-4y^2-5y^3}{10y^2}  

 2y+y210\frac{2y+y^2}{10}  

 5y34y213y+510y2\frac{5y^3-4y^2-13y+5}{10y^2}  

 y32y2+13y510y\frac{y^3-2y^2+13y-5}{10y}  

5.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Wykonaj działanie:

 2a2a3+3a+3\frac{2a^2}{a-3}+\frac{3}{a+3}  

 2a23a29\frac{2a^2-3}{a^2-9}  

 2a3+a\frac{2a}{-3+a}  

 6a2+2a3+3a9(a3)(a+3)\frac{6a^2+2a^3+3a-9}{\left(a-3\right)\left(a+3\right)}  

 6a3+2a23a+9a29\frac{6a^3+2a^2-3a+9}{a^2-9}  

6.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Wykonaj działanie:

 x+2+x23x2xx+2+\frac{x^2-3x}{2-x}  

 3x+42x\frac{-3x+4}{2-x}  

 x23x+x+22x\frac{x^2-3x+x+2}{2-x}  

 2x+x23x2x\frac{2x+x^2-3x}{2-x}  

 x+12\frac{x+1}{2}  

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Wyznacz dziedzinę:

 x+32x1+2x13x+1\frac{x+3}{2x-1}+\frac{2x-1}{3x+1}  

D: x e R\{  13; 12-\frac{1}{3};\ \frac{1}{2}  }

D: x e R\ { 12; 2\frac{1}{2};\ 2  }

D: x e R\ {  12; 13\frac{1}{2};\ \frac{1}{3}  }

D: x e R\ { 12;13-\frac{1}{2};\frac{1}{3}  }

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