Distances travelled by Hamid and Akhtar in an hour are 9 km and 12 km . Find the atio of speed of Hamid to the speed of Akhar, fill in the following blanks:

1) \( \frac{a^{2}+a b}{a^{2}+b^{2}} \cdot\left(\frac{a}{a-b}-\frac{b}{a+b}\right) \)

\[ A=\left\{\frac{1}{3}, \frac{5}{4}, \frac{11}{2}, \frac{7}{8}, \frac{25}{3}\right\} \] \[ B=\left\{\frac{1}{4}, \frac{35}{40}, \frac{15}{12}, \frac{11}{3}, \frac{25}{4}\right\} \] \( \quad C=\{x \in Q \mid x<1\} \) \( D=\{x \in Q \mid x>2\} \) Determina: a. \( A \cap B \) b. \( A \cup B \) c. \( A-B \) I. \( (A \cup B) \cap C \) \( (A \cup B) \cap D \)

soit f la fonction définie sur R par \( \mathrm{F} 2 \mathrm{x}= \) x au carré \( +\mathrm{x}-2 \) déterminer le taux de variation de f entre 0 et 5

What is the quotient of 6 and \( -\frac{1}{2} \) ? -12 \( -\frac{1}{12} \) \( \frac{1}{12} \) 12

Berel \( \mathbf{5} \boldsymbol{k}^{2} \)