Sagot :
bjr
4¹⁵ + 8¹⁰ = (2²)¹⁵ + (2³)¹⁰ ( 4 = 2² et 8 = 2³)
= 2³⁰ + 2³⁰ (on multiplie les exposants)
= 2 x 2³⁰ ( a + a = 2a)
= 2¹ x 2³⁰ ( 2 = 2¹ )
= 2¹⁺³⁰ (on ajoute les exposants)
= 2³¹
bjr
4¹⁵ + 8¹⁰ = (2²)¹⁵ + (2³)¹⁰ ( 4 = 2² et 8 = 2³)
= 2³⁰ + 2³⁰ (on multiplie les exposants)
= 2 x 2³⁰ ( a + a = 2a)
= 2¹ x 2³⁰ ( 2 = 2¹ )
= 2¹⁺³⁰ (on ajoute les exposants)
= 2³¹