Question

Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.

log6x2 = log6(5x + 36)

Answer 1

A. (3/2)

B. {9}

C. Ø

D. {9, -4}

Answer 2

Your username/picture is awesome. *_*

Answer 3

lol thanks ;-P

Answer 4

You're welcome. (:

Answer 5

log 6 + logx^2 = log6 + log(5x+36)
logx^2 = log(5x+36)
taking antilogs,
x^2 = 5x + 36
What do you do after this

Answer 6

\[x^2 -5x-36=0\\x^2+4x-9x-36\\ x(x+4)-9(x+4)\\(x-9)(x+4)\\ x=9 \ \ \ x=-4\]

Answer 7

thank you ;-) @perurabo