Bonjour !
[tex]7280000 = = 7.28 \times {10}^{6} [/tex]
[tex]25000 = 2.5 \times 10 {}^{4} [/tex]
[tex]0.0058 = 5.8 \times {10}^{ - 3} [/tex]
[tex]0.000149 = 1.49 \times {10}^{ - 4} [/tex]
[tex]6000000000 = 6 \times {10}^{9} [/tex]
[tex]0.000000001 = 1 \times {10}^{ - 8} [/tex]
[tex]159 \times {10}^{9} = 1.59 \times 10 {}^{11} [/tex]
[tex]12 \times 10 { }^{ - 6} = = 1.2 \times {10}^{ - 5} [/tex]
[tex]3.5 \times 10 {}^{ - 12} [/tex]
Bonne journée
