Question

Geente me ajudaa
a²+4a ( para a=2/3

Answer 1

$\frac{2}{3} . \frac{2}{3} + 4. \frac{2}{3} = \frac{4}{9} + \frac{8}{3} = \frac{4 + 24}{9} = \frac{28}{9}$

Answer 2

ficaria 
(2/3) quadrado+4.2/3
= 4/9+8/3
M.M.C=4+24/9=28/9