Bonjour,
[tex] \frac{7}{6} x( \frac{4}{3}x + \frac{7}{8} )[/tex]
[tex] = \frac{7}{6} x \times \frac{4}{3} x + \frac{7}{6}x \times \frac{7}{8} [/tex]
[tex] = \frac{28}{18} {x}^{2} + \frac{49}{48} x[/tex]
[tex] = \frac{14}{9} {x}^{2} + \frac{49}{48} x[/tex]
