Question

X elevado a 7 =128 quanto é x?

Answer 1

$x {}^{7} = 128 \\ x - 128 {}^{7}$

Answer 2

OI....

$x^7 = 128\\\\x^7=2^7\\\\x = 2\\\\Fatorando\\\\128/2\\64/2\\32/2\\16/2\\8/2\\4/2\\2/2\\1\\\\128~=~2^7\\\\Espero~ter~ajudado.$