Question 1152203

Please solve for x;
(a)logx 121 = 2
(b) log4 1/256=x
(c)log1/3 x=5
show steps please thanks!
<pre><b>a)</b> {{{matrix(1,3, log (x, (121)), "=", 2)}}}
   {{{highlight_green(matrix(3,3, x^2, "=", 121, x, "=", sqrt(121), x, "=", 11))}}} ------ Converting to EXPONENTIAL form, and SOLVING
<b>b)</b> {{{matrix(1,3, log (4, (1/256)), "=", x)}}}                    
   {{{highlight_green(matrix(3,3, 4^x, "=", 1/256, 4^x, "=", 4^(- 4), x, "=", - 4))}}} ------ Converting to EXPONENTIAL form, and SOLVING
<b>c) </b> {{{matrix(1,3, log (1/3, (x)), "=", 5)}}}
   {{{highlight_green(matrix(3,3, x, "=", (1/3)^5, x, "=", (1^5)/(3^5), x, "=", 1/243))}}} -------- Converting to EXPONENTIAL form, and SOLVING