Question

O valor de (0,2)3 + (0,16)2 é:
a) 0,0264
b) 0,0336
c) 0,1056
d) 0,2568
e) 0,625

Answer 1

Ta na duvida, transforma em fração 

0,2³ = (2/10)³ = 2x2x2/10/10/10 = 8/1000 = 0,008
0,16² = (16/100)² = 16x16/100/100 = 256/10000 =0,0256

1 mais o outro = 0,008 + 0,0256 = 0,0336     B

^^ espero ter ajudado

Answer 2

$\sf \left(0,\:2\right)^3+\left(0,\:16\right)^2\\\\\\0.2^3=0.008\\\\\\=0.008+0.16^2\\\\\\0.16^2=0.0256\\\\\\=0.008+0.0256\\\\\\\to \boxed{\sf =0.0336}$