Salut !
R = 3 × 10¹⁰⁸ × 4 × 10⁻¹⁰⁵
= 3 × 4 × 10¹⁰⁸⁺⁽⁻¹⁰⁵⁾
= 12 × 10³
= 12 000
S = 150 × 10³ × 8 × 10⁵
= 150 × 8 × 10³⁺⁵
= 1 200 × 10⁸
= 1,2 × 10¹¹
= 120 000 000 000
T = (35 × 10⁻³ × 3 × 10⁵) ÷ (21 × 10⁻¹)
= ((7 × 5 × 3) ÷ (3 × 7)) × 10⁻³⁺⁵⁻⁽⁻¹⁾
= 5 × 10³
= 5 000
Tu essayes de faire le dernier ?
