Sagot :
Bjr
A = 2142
A = 2,142 × 10³
___________________________
B = 0,1539
B = 1,539 × 10‐¹
___________________________
C = 123 456 000
C = 1,23456 × 10⁸
___________________________
D = 0,000 321 × 10¹²
D = 3,21 × 10⁸
Voilà !
Bjr
A = 2142
A = 2,142 × 10³
___________________________
B = 0,1539
B = 1,539 × 10‐¹
___________________________
C = 123 456 000
C = 1,23456 × 10⁸
___________________________
D = 0,000 321 × 10¹²
D = 3,21 × 10⁸
Voilà !