Quel est la racine carré de 72 243 1575 392 3456 4racine de 128 et vos calcule pour un des nombre, merci!
Comme :
— 4 = 2² ⇔ √4 = 2
— 9 = 3² ⇔ √9 = 3
— 16 = 4² ⇔ √16 = 4
— 25 = 5² ⇔ √25 = 5
— 36 = 6² ⇔ √36 = 6
— 49 = 7² ⇔ √49 = 7
on a :
√72 = √(36 × 2)
= 6√2
√243 = √(9 × 27)
= 3√(9 × 3)
= 3 × 3√3
= 9√3
√1575 = √(25 × 63)
= 5√(9 × 7)
= 5 × 3√7
= 15√7
√392 = √(49 × 8)
= 7√(4 × 2)
= 7 × 2√2
= 14√2
√3456 = √(36 × 96)
= 6√(16 × 6)
= 6 × 4√6
= 24√6
4√128 = 4 × √(16 × 8)
= 4 × 4√(4 × 2)
= 16 × 4√2
= 64√2