Title: MAT. Fraccions algèbriques. Operacions
Course: Matemàtiques de 3r d'ESO

Q: $$\frac{{b}}{x^2-{a}x}+\frac{{c}}{x^2-{={a}*{a}}}$$

Op1: $$\frac{{={b}+{c}}}{2x^2-{a}x-{={a}*{a}}}$$

Op2: $${={b}+{c}}$$

Op3: $${{={b}+{c}}x+{={b}*{a}}}$$

Op4: $${={b}-{c}}x^2+{={a}+{c}}x-{={b}*{a}*{a}}$$

Op5: $$\frac{{={b}+{c}}x+{={b}*{a}}}{x^3-{={a}*{a}}x}$$

Op6: $${={b}+{c}}x^2+{=-{a}*{c}}x-{={b}*{a}*{a}}$$

Op7: $$\frac{{={b}+{c}}x^2+{=-{a}*{c}}x-{={b}*{a}*{a}}}{{x^3-{={a}*{a}}x}}$$
- Op{=1+{a}-{a}}
- Op{=2+{a}-{a}}
- Op{=3+{a}-{a}}
- Op{=4+{a}-{a}}
- Op{=5+{a}-{a}}
- Op{=6+{a}-{a}}
- Op{=7+{a}-{a}}
A: Op{=5+{a}-{a}} (formula; values not in the backup's text)
If right: La teva resposta és correcta.
If partly right: La teva resposta és parcialment correcta.
If wrong: La teva resposta és incorrecta.

Q: $$\frac{{e}x+{b}}{x+{a}}+\frac{{c}}{x}={e}+\frac{{f}}{x}$$
A: ({a}*{c}-{a}*{f})/({a}*{e}-{b}-{c}+{f}) (formula; values not in the backup's text)

Q: $$\frac{x^2-5}{4x}+\frac{2x+1}{12}$$
- $$\frac{x^2+2x-4}{4x+12}$$
- $$\frac{x^2+2x+6}{4x+12}$$
- $$\frac{5x^2+x-15}{12x}$$
- $$\frac{20x^2-4x-60}{48x}$$
- $$\frac{x^2+2x-4}{48x}$$
- $$\frac{x^2+2x-4}{12x}$$
A: $$\frac{5x^2+x-15}{12x}$$

Q: $$\frac{x-{a}}{x+{b}}=\frac{{c}x+{d}}{{c}x-{e}}$$
A: (-{a}*{e}+{b}*{d})/(-{a}*{c}-{b}*{c}-{d}-{e}) (formula; values not in the backup's text)

Q: $$\frac{x-{a}}{x-{b}}=\frac{{c}x-{d}}{{c}x+{e}}$$
A: ({a}*{e}+{b}*{d})/(-{a}*{c}+{b}*{c}+{d}+{e}) (formula; values not in the backup's text)

Q: $$\frac{2}{x}+\frac{5}{x-1}=$$
- $$\frac{7}{2x-1}$$
- $$\frac{7x-2}{x^2-x}$$
- $$\frac{7}{x^2-1}$$
- $$\frac{3}{x-1}$$
A: $$\frac{7x-2}{x^2-x}$$
If partly right: 1

Q: $$\frac{x}{x+2}\cdot\frac{4}{x^3}$$
- $$\frac{x^4}{4x+8}$$
- $$\frac{x+4}{x^3+x+2}$$
- $$\frac{4}{x^3+2x^2}$$
A: $$\frac{4}{x^3+2x^2}$$
If partly right: 1