Respuesta :

bookishfairy73
Step 1: Add 128 to both sides.
x^7−128+128=0+128
x^7=128
Step 2: Take root.x=(128)^(1/7)
x=2
Answer:
x=2
Billymkhoi
x^7 -128= 0
⇒ x^7 -2^7= 0 (because 2^7= 128)
⇒ x^7= 2^7
⇒ x= 2

The final answer is x=2~