Question 533186
how do i solve log(x)81=-4
Write the exponent form of logs
x^-4 = 81
get rid of the neg by using the reciprocal of 81
x^4 = {{{1/81}}}
x = the 4th root of {{{1/81}}}
x = {{{1/3}}}
;
:
Check on calc 3^4 = 81