X=-12 X = 3 extra 72 - 8X - 4= 0 Solve each equation. Don't forget to check for extraneous solutions! on 17) -8+ 7log , 5x = 13 27 18) log (x + 15) + log x = 2 x =5 5 20) log, (x - 5) + log, x = log, 3+ 3 19) log 3 - log, 2x = 1 4 x-8 21) log , x + log , (x + 24) = 4 x= 3 4e 22) In -5x - In 4 = 1 TE - 5 23) log 3- log -5x = 1 24) -1 - 3log, (9 -4m) = 2 11 40 = 5 -2