Quiz about FRACCIONS ALGÈBRIQUES 1BATX

Question 1

$$\frac{3}{x^2-1}+\frac{5x}{x+1}-\frac{2x}{x-1}$$

Accepted Answer

$$\frac{3x^2-7x+3}{x^2-1}$$

Answer

$$\frac{3x^2-7x+3}{x^2+1}$$

Answer

$$\frac{3x^2+7x+3}{x^2-1}$$

Answer

$$\frac{3x^2-7x-3}{x^2-1}$$

Question 2

$$\frac{x^2-4}{3x}:\frac{x^2-4x+4}{x+2}$$

Accepted Answer

$$\frac{x^2+4x+4}{3x^2-6x}$$

Answer

$$\frac{x^2-4x+4}{3x^2-6x}$$

Answer

$$\frac{x^2+4x-4}{3x^2-6x}$$

Answer

$$\frac{x^2+4x+4}{3x^2+6x}$$

Question 3

$$2-\frac{3x}{x+1}$$

Accepted Answer

$$\frac{-x+2}{x+1}$$

Answer

$$\frac{x+2}{x+1}$$

Answer

$$\frac{-x-2}{x+1}$$

Answer

$$\frac{-x+2}{x-1}$$

Question 4

$$\frac{2x-5}{x^2-9}+\frac{5}{3x-9}$$

Accepted Answer

$$\frac{11}{3x^2-27}$$

Answer

$$\frac{11}{3x^2+27}$$

Answer

$$\frac{10}{3x^2-27}$$

Answer

$$\frac{10}{3x^2+27}$$

Question 5

$$\frac{11}{x^2-9}:\frac{22}{x^2-2x}$$

Accepted Answer

$$\frac{x^2-2x}{2x^2-18}$$

Answer

$$\frac{x^2+2x}{2x^2-18}$$

Answer

$$\frac{x^2-2x}{2x^2+18}$$

Answer

$$\frac{x^2-2}{2x^2-18}$$

Question 6

$$\frac{x+1}{x-1}-\frac{x-2}{1-x^2}$$

Accepted Answer

$$\frac{x^2+3x-1}{x^2-1}$$

Answer

$$\frac{x^2+3x-1}{x^2+1}$$

Answer

$$\frac{x^2+3x+1}{x^2-1}$$

Answer

$$\frac{x^2-3x-1}{x^2-1}$$

Question 7

$$\frac{x+5}{x-5}-\frac{x-5}{x+5}+\frac{x^2}{x^2-25}$$

Accepted Answer

$$\frac{20x+x^2}{x^2-25}$$

Answer

$$\frac{20x+x^2}{x^2+25}$$

Answer

$$\frac{20x-x^2}{x^2-25}$$

Answer

$$\frac{20x+x^2}{x^2-5}$$

Question 8

$$\frac{11}{x^2-4}:\frac{22}{x^2-2x}$$

Accepted Answer

$$\frac{x}{2x+4}$$

Answer

$$\frac{x}{2x-4}$$

Answer

$$\frac{1}{2x+4}$$

Answer

$$\frac{1}{2x-4}$$

Question 9

$$\frac{x+2}{x-2}-\frac{x-2}{x+2}+\frac{16}{x^2-4}$$

Accepted Answer

$$\frac{8}{x-2}$$

Answer

$$\frac{1}{x-2}$$

Answer

$$\frac{8}{x+2}$$

Answer

$$\frac{1}{x+2}$$

Question 10

$$\frac{x^2+6x+8}{x^2-1}:\frac{3x+6}{x+1}$$

Accepted Answer

$$\frac{x+4}{3x-3}$$

Answer

$$\frac{x}{3x-3}$$

Answer

$$\frac{x-4}{3x-3}$$

Answer

$$\frac{x+4}{3x+3}$$

Question 11

$$\frac{x^2-4}{x^2-1} imes\frac{x+1}{x+2}$$

Accepted Answer

$$\frac{x-2}{x-1}$$

Answer

$$\frac{x+1}{x-1}$$

Answer

$$\frac{x+2}{x-1}$$

Answer

$$\frac{x-2}{x+1}$$

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