Respuesta :

(1.8x10^1)(7x10^5)
= (1.8 x 7) (
(10^1 x 10^5)
= 12.6 x 10^6
= 1.26 x 10^7
1. 5.6 x 10⁹
2. 2.1 x1 0⁻⁵