Question

dada a expressão numérica resolva

Answer 1

(-5)² = 25
(3²) = 9
(2/3)^0 = 1
(3)^-2 = (1/3)² = 1/9
Substituindo:
(25-9+1)/1/9+1/5+1/2 
Agora faça o mmc do denominador:
1/9+1/5+1/2    mmc=90
(10+18+45)/90 = 73/90
Logo:
(25-9+1)/73/90=17/73/90=17x90/73=1530/73

Answer 2

(-5)² = 25
(3²) = 9
(2/3)^0 = 1
(3)^-2 = (1/3)² = 1/9
Substituindo:
(25-9+1)/1/9+1/5+1/2 
Agora faça o mmc do denominador:
1/9+1/5+1/2    mmc=90
(10+18+45)/90 = 73/90
Logo:
(25-9+1)/73/90=17/73/90=17x90/73=1530/73