Sagot :
(18 x 10⁻²) + (27 x 10⁻¹) = 72/25
(24 x10⁸) / (3 x 10⁻⁵) = 8*10¹³
((0.75 x 10¹²) x (4 x 10⁻⁵)) / (5x10⁻⁷) = 6*10¹³
((18 x 10⁴) x (5 x 10⁻⁷)) / ((4 x 10⁻⁵) x (0.9 x 10¹⁰)) = 2.5*10⁻⁷
voilà :)
18 X 10 P-2+27 X 10P-1 = 18 + 27 X 10 P -2 + -1
45 X 10 P-3
24 X 10 P8 = 8 X 10 P8 +5 = 8 P13
3 X 10 P -5
0,75 X 10 P12 X 4 X 10 P -5 = 0,75 X 4 X 10 P12 -5 = 3 X 10 P7 = 3/5
5 X 10 P -7 5 X 10 P-7 5 X 10 P -7
18 X 10 P4 X 5 X 10 P-7 = 18 X 5 X 10 P 4 -7 = 90 X 10 P-3 +5 = 33,33 X 10 P +2
4 X 10 P-5 X 0,9 X 10 P10 3 X 0,9 X 10 P-5 +10 2,7