Question

Efetue as operações na potencia de base 10:
1) 2.10¹²+3.10¹²=
2) 4.10¹³–3.10¹³=
3) 5.13 ‐¹²+3.10‐¹²=
4) 8,2.10‐⁵–5.10‐⁵=
5) 4.10⁶.3.10⁵=
6) 6.10‐³.3.10‐⁵=
7) 2.10⁵.5.10⁴=
8) 9.10⁹.10‐⁶.2.10‐⁶=
9) 10⁹.3.10‐³.2.10‐⁶=
Ajuda aí por favor!!!​

Answer 1

$a)2 \times {10}^{12} + 3 \times {10}^{12} = 5 \times {10}^{12} \\ b)4 \times {10}^{13} - 3 \times {10}^{13} = 1 \times {10}^{13} \\ c)5 \times {10}^{ -12 } + 3 \times {10}^{ - 12} = \\ 8 \times {10}^{ - 12}$

$h)9 \times {10}^{9} \times {10}^{ - 6} \times 2 \times {10}^{ - 6} = > \\ 18 \times {10}^{ - 3} = > 1.8 \times {10}^{ - 2} \\ i) {10}^{9} \times 3 \times {10}^{ - 3} \times 2 \times {10}^{ - 6} = > \\ 6 \times {10}^{0}$

$d)8.2 \times {10}^{ - 5} - 5 \times {10}^{ - 5} = \\ 3.2 \times {10}^{ - 5} \\ e)4 \times {10}^{6} \times 3 \times {10}^{5} = 12 \times {10}^{11} = \\ 1.2 \times {10}^{12}$

$f)6 \times {10}^{ - 3} \times 3 \times {10}^{ - 5} = > \\ 18 \times {10}^{ - 8} = > 1.8 \times {10}^{ - 7} \\g) 2 \times {10}^{5} \times 5 \times {10}^{4} = > \\ 10 \times {10}^{9} = > 1 \times {10}^{10}$

Espero ter ajudado!!!