Question

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$( {6.10}^{5} + {8.10}^{2} ). {5.10}^{5}$

Answer 1

$(6 \cdot {10}^{5} + 8 \cdot {10}^{2}) \cdot 5 \cdot {10}^{5} \\ = 6 \cdot {10}^{5} \cdot 5 \cdot {10}^{5} + 8 \cdot {10}^{2} \cdot 5 \cdot {10}^{5} \\ = 30 \cdot {10}^{10} + 40 \cdot {10}^{7} \\ = 30 \cdot {10}^{2} \cdot {10}^{8} + 4 \cdot 10 \cdot {10}^{7} \\ = 30 \cdot 100 \cdot {10}^{8} + 4 \cdot {10}^{8} \\ = 3000 \cdot {10}^{8} + 4 \cdot {10}^{8} \\ = 3004 \cdot {10}^{8} \\ \\ \boxed{ \textrm{ Resposta: } 3004 \times {10}^{8} \textrm{ ou } 3,004 \times {10}^{11}}$