Question 752489
 Solve
a) {{{sqrt(2x+1)}}} + 5 = 8 
subtract 5 from both sides and you have:
{{{sqrt(2x+1)}}} = 3
Square both sides and you have
2x + 1 = 9
subtract 1 from both sides
2x = 8
divide both sides by 2
x = 4
:
:
Check solution in original problem
{{{sqrt(2(4)+1)}}} + 5 = 8 
{{{sqrt(9)}}} + 5 = 8