☺ Salut ☺
On donne [tex]a = \dfrac{2}{3}[/tex]
• Calculons [tex]A = 2a[/tex] ; [tex]B = 2 + a[/tex] ; [tex]C = {a}^{2}[/tex] :
[tex]\;A = 2a[/tex]
• [tex]\;A = 2(\dfrac{2}{3})[/tex]
• [tex]\;A = \dfrac{2 \times 2}{3})[/tex]
• [tex]\;\boxed{\boxed{\green{A = \dfrac{4}{3}}}}[/tex]
[tex]\;B = 2 + a[/tex]
• [tex]\;B = 2 + \dfrac{2}{3}[/tex]
• [tex]\;B = \dfrac{6 + 2}{3}[/tex]
• [tex]\;\boxed{\boxed{\green{B = \dfrac{8}{3}}}}[/tex]
[tex]\;C = {a}^{2}[/tex]
• [tex]\;C = {(\dfrac{2}{3})}^{2}[/tex]
• [tex]\;\boxed{\boxed{\green{C = \dfrac{4}{9}}}}[/tex]
