Respostas

2013-10-24T12:46:15-02:00
Hola.

10^3*10^2 = 10^(3+2) = 10^5

2-² * 3-² * 5-² = (2*3*5^)-² = 30-²

250^4/125^4 = (250/125)^4 = 2^4