Question

o valor da expressão $( \frac{-2}{3} )$² + $(\frac{7}{9} )$⁰ é 
a) $\frac{13}{9}$
b)$\frac{5}{9}$
c)$\frac{-5}{9}$ 

Answer 1

(-2/3)^2 + (7/9)^0=

(3/2)^2 + 1=

9/4 +1=
9/4 + 4/4=
13/4