B = (3x10^5)^2 - 6 x 10^3]/(0.0004)^5
= 3^2 x 10^5x2 - 6x10^3]/(4x10^-4)^5
= 9 x 10^10 - 6x10^3]/(4^5x10^-4x5)
= 8.8x10^33 - 5.9 x 10^26
Soit 9x10^33 - 6x10^26
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Verified answer
B = (3x10^5)^2 - 6 x 10^3]/(0.0004)^5
= 3^2 x 10^5x2 - 6x10^3]/(4x10^-4)^5
= 9 x 10^10 - 6x10^3]/(4^5x10^-4x5)
= 8.8x10^33 - 5.9 x 10^26
Soit 9x10^33 - 6x10^26