Question

Solve for x.

a. log (x+3) + log x = 1

Answer 1

x = 2

Explanation:

x + 3 > 0

x > -3

x > 0

log [x(x+3)]= log 10

log (x² + 3x) = log 10

x² + 3x = 10

x² + 3x - 10 = 0

(x+5)(x-2) = 0

x = -5 (not acceptable)

x = 2

Answer 2

Explanation:

log=(x+3)

x=1

(1+3)=4

log=4