Question

Can somebody help me solve 8^4v + 5 = 31 ?

Answer 1

`8^(4v)+5=31`
minus 5 both sides

`8^(4v)=26`
take the log₈ of both sides
4v=log₈26
divide both sides by 4
v=(1/4)log₈28

if yo use calculator
go back

`8^(4v)=26`
take ln of both sides
4vln8=ln26
divide both sides by (4ln8)
v=(ln28)/(4ln8)
evaluate
v≈0.40061291017147