Sagot :
Réponse :
bonjour,
4³ × 25³ = ( 4 × 25 ) ³ = 100³
1.25⁴ × 8⁴ = ( 1.25 × 8 )⁴ = 10⁴
8 × 5³ = 2³ × 5³ = ( 2 × 5 )³ = 10³
voila :)
bjr
aⁿ x bⁿ = (a x b)ⁿ
on applique cette formule
a)
4³ x 25³ = (4 x 25)³ ( ici a = 4 ; b = 25 et n = 3)
= 100³
= 1 000 000
b)
1,25⁴ x 8⁴ = (1,25 x 8)⁴ (1,25 x 8 = 10)
= 10⁴
= 10 000
c)
8 x 5³ = 2³ x 5³ = (2 x 5)³ = 10³ = 1 000