Question

(-2/3) elevado ao quadrado + (-2/3) + (-2/3) elevado a 0

Answer 1

(-2/3)² + (-2/3) + (-2/3)º=
4/9  -  2/3  + 1 = ---mmc(3,9)= 9
4/9  -  6/9  + 9/9 = 
7/9

Answer 2

.
$(- \frac{2}{3} )^2+(- \frac{2}{3} )+(- \frac{2}{3} )^0= \\ \\ (+ \frac{4}{9} )+(- \frac{2}{3} )+(+1)= \\ \\ \frac{4}{9} - \frac{2}{3} +1= \\ \\ mmc(9,3)=9 \\ \\ \frac{4-6+9}{9} = \frac{13-6}{9} = \frac{7}{9}$