Bonsoir !
A)
[tex] \frac{7 \times {10}^{5} }{2 \times {10}^{2} } = \frac{7}{2} \times {10}^{3} = 3.5 \times {10}^{3} = 3500[/tex]
B)
[tex] \frac{0.005 \times {10}^{6} }{25 \times {10}^{ - 4} } = \frac{5 \times {10}^{3} }{25 \times {10}^{ - 4} } = \frac{5}{25} \times {10}^{7} = 0.2 \times {10}^{7} = 2 \times {10}^{6} = 2 \: 000 \: 000[/tex]
C)
[tex] \frac{2 \times {10}^{6} \times 35 \times {10}^{ - 2} }{5 \times {10}^{4} } = \frac{70}{5} \times \frac{ {10}^{4} }{ {10}^{4} } = 14 \times {10}^{0} = 14[/tex]
D)
[tex]4 \times {10}^{6} \times 25 \times {10}^{ - 4} = 100 \times {10}^{2} = 1 \times {10}^{0} = 1[/tex]
Bonne soirée !
