Question

Expresa en notacion cientifica y calcula:
a) (3x10∧5) . (2x10∧6)
b) (2x10∧-8) . (1,5x10∧12)
c) (4x10∧8) + (5x10∧7)
d) (4x10∧-3) - (5.10∧-4)

Answer 1

a.
3x10^5x2x10^6
6x10^11
600000000000

b.
(2x5^-8x2^-8)x1,5x10^12(2^-7x5^-8)x1,5x5^12x2^12
2^-7x5^-8x1,5x5^12x2^12
1,5x2^5x5^4
1,5x32x5^4
48x5^4
48x625
30000

c.
4x10^8+5x10^7
(4x10+5)x10^7
(40+5)x10^7
45x10^7
450000000