pouvez m aider svp c est super dure ​

Réponse :

bonjour

A = 3 × 10⁴+2×10²+5×10⁰

= 3×10000 + 2×100 + 5×1

= 30000 + 200 + 5

= 30205

B = (6×10¹²×35×10⁸) / ( 14×(10⁵)³ )

= (210 × 10 ¹²⁺⁸ ) / ( 14 × 10⁵ˣ³)

= (210 × 10²⁰ ) / ( 14 × 10¹⁵ )

= 210/14 × 10²⁰/10¹⁵

= 15×10²⁰⁻¹⁵

= 15×10⁵

= 1 500 000

C = (3× 10⁵ - 6 ×10³) / (3× 10³)

= (300000 - 6000 ) / ( 3000)

=294000/3000

=98

voila :)