Question

log (x+4) - log 7 = 3 log 2 - log(x+5)
find x​

Answer 1

Answer:

x+4/7=2^3/x+5

x+4=56/x+5

(x+4) (x+5) =5

x^2+9x+20-5=0

x^2+9x+15=0

now use quadric formula and find x