Question 41052
a: x^2 - 13 = 0
x^2 = 13 add thirteen
x = {{{sqrt(13)}}} or {{{-sqrt(13)}}} square root each side
b: 16x^2 = 9 
x^2 = 9/16 divide each side by sixteen
x = 3/4 or -3/4 square root each side
c: (x - 5)^2 = 27
x - 5 = +-{{{sqrt(27)}}} square root each side
x = 5 +-{{{sqrt(27)}}} add five