Question

Despejar la incognita
(2n+3)³ = 81
Encontrar valor
38m² - 64 = 0

Answer 1

(2n +3)³ = 81
(2n + 3)³ = 3³ *3
∛(2n +3)³ =∛3³*3
2n +3 = 3∛3
2n = 3∛3 -3
n = (3∛3 - 3)/2
n = 3(∛3 -1)/2

38m² -64 = 0
38m² = 64
m² = 64/38
m =√64/38
m = -8/√38
m = 8/√38
Tiene 2 soluciones
m = 8/√38  o  m = -8/√38