p = log 20 , and q = log 25, find the value of x, if 2 log (x+1) = 2p - q

2log(x-4) = 2m-n
log (x-4)² = 2log20 - log 25
log (x-4)² = log20² - log25
log(x-4)² - log(20²/25)
⇒ (x-4)² = (20/5)²
x - 4 = 4 
x = 8