Question

Log x + log (x+1) = log 2

Answer 1

Log x + log ( x + 1 ) = log 2
        log x ( x + 1 ) = log 2
                   x² + x = 2
              x² + x - 2 = 0
    ( x + 2 ) ( x - 1 ) = 0
                         x = -2 atau 1

Answer 2

Log x + log (x+1)
artinya log x.(x+1) = log 2
x² + x -2=0
(x+2)(x-1)
x= -2 atau x= 1
yang diambil yg positif x= 1