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Ułamki algebraiczne

Authored by Maria Medrzycka

Mathematics

11th Grade

Used 38+ times

Ułamki algebraiczne
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Dziedziną ułamka  x26x+94x236\frac{x^2-6x+9}{4x^2-36}  jest

 R  {3}R\ -\ \left\{3\right\}  

 R{3, 3}R-\left\{-3,\ 3\right\}  

 R{3}R-\left\{-3\right\}  

 R  {3, 0, 3}R\ -\ \left\{-3,\ 0,\ 3\right\}  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Suma ułamków  xx2+2x+2\frac{x}{x-2}+\frac{2}{x+2}  jest równa

 1x2, x2\frac{1}{x-2},\ x\ne2  

 1x2, D=R{2, 2}\frac{1}{x-2},\ D=R-\left\{-2,\ 2\right\}  

 x2+4x4x24, x2, x2\frac{x^2+4x-4}{x^2-4},\ x\ne-2,\ x\ne2  

 (x+2)28x24, D = R{2}\frac{\left(x+2\right)^2-8}{x^2-4},\ D\ =\ R-\left\{2\right\}  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Różnica ułamków  343x+2\frac{3}{4}-\frac{3}{x+2}  jest równa

 3x34x+8, x2\frac{3x-3}{4x+8},\ x\ne-2  

 0, x20,\ x\ne-2  

 34, x2\frac{3}{4},\ x\ne-2  

 3(x1)4x+2, x2\frac{3\left(x-1\right)}{4x+2},\ x\ne-2  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Iloczyn ułamków  4x38x216x2644x+8x2\frac{4x^3-8x^2}{16x^2-64}\cdot\frac{4x+8}{x^2}  jest równy

 14, D = R{2, 0, 2}\frac{1}{4},\ D\ =\ R-\left\{-2,\ 0,\ 2\right\}  

 1, D = R1,\ D\ =\ R  

 x2, D = R  {2, 2}x^2,\ D\ =\ R\ -\ \left\{-2,\ 2\right\}  

 1, D = R{2, 0, 2}1,\ D\ =\ R-\left\{-2,\ 0,\ 2\right\}  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Iloraz ułamków  9x+9x25x+10:18x4x+8\frac{9x+9x^2}{5x+10}:\frac{18x}{4x+8}  jest równy

 0,4(x+1), D = R{2, 0}0,4\left(x+1\right),\ D\ =\ R-\left\{-2,\ 0\right\}  

 x(1+x)5x, D = R{2}\frac{x\left(1+x\right)}{5x},\ D\ =\ R-\left\{-2\right\}  

 x+15, D = R {2, 0}\frac{x+1}{5},\ D\ =\ R\ -\left\{-2,\ 0\right\}  

 185(1+x), D = R{2, 0}\frac{18}{5}\left(1+x\right),\ D\ =\ R-\left\{-2,\ 0\right\}  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Rozwiązaniem równania  2x2+x1x2=16x\frac{2}{x^2+x}-\frac{1}{x^2}=\frac{1}{6x} jest

 x{2,3}, D = R{1, 0}x\in\left\{2,3\right\},\ D\ =\ R-\left\{-1,\ 0\right\}  

 x{3, 2}, D = R{1, 0}x\in\left\{-3,\ -2\right\},\ D\ =\ R-\left\{-1,\ 0\right\}  

 x{2,3}, D = R{1, 0}x\in\left\{-2,3\right\},\ D\ =\ R-\left\{-1,\ 0\right\}  

 x{3, 2}, D = R{1, 0}x\in\left\{-3,\ 2\right\},\ D\ =\ R-\left\{-1,\ 0\right\}  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 x2x32=x4\frac{x-2}{x-3}-2=\left|x-4\right| to równanie spełniają 

 x{121, 4}x\in\left\{1-\sqrt{21},\ 4\right\}  

 x{2, 4}x\in\left\{2,\ 4\right\}  

 x{2, 3, 6}x\in\left\{2,\ 3,\ 6\right\}  

 x=4x=4  

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