Réponse:
[tex]A = \frac{65}{26} \times \frac{ {10}^{3} \times {10}^{ - 5} }{ {10}^{2} } \\ A = \frac{5 \times 13}{2 \times 13} \times {10}^{3 + ( - 5) - 2} \\ A = 2.5 \times {10}^{ - 4} \\ A = 0.00025[/tex]
[tex]B = 0.0153 + 0.032 - 0.00016 \\ B = 0.04714 \\ B = 4.714 \times {10}^{ - 2} [/tex]
[tex]C = \frac{1.6}{4} \times \frac{ {10}^{ - 12} }{ {10}^{ - 9} } \\ C = 0.4 \times {10}^{ - 12 - ( - 9)} \\ C = 0.4 \times {10}^{ - 3} \\ C = 0.0004 \\ C = 4 \times {10}^{ - 4} [/tex]
[tex]D = \frac{0.3 \times 5}{4} \times \frac{ {10}^{2} \times {10}^{ - 3} }{ {10}^{ - 4} } \\ D = 0.375 \times {10}^{2 + ( - 3) - ( - 4)} \\ D = 0.375 \times {10}^{3} \\ D = 375 \\ D = 3.75 \times {10}^{2} [/tex]
