Question

What is the solution set of (3x - 1)2 = 5?

Answer 1

i take it this is
\[(3x-1)^2=5\] right?

Answer 2

so
\[3x-1=\pm\sqrt5\] and so you get
\[3x=1\pm\sqrt5\] making
\[x=\frac{1\pm\sqrt5}{2}\]

Answer 3

oops typo there
\[x=\frac{1\pm\sqrt5}{3}\]

Answer 4

if you have
\[(ax+b)^2=c\] do not multiply out and use the quadratic formula, that is working backwards