Question 672676
<pre>
The other tutor's answer is only half right for there are TWO
SOLUTIONS, not just one.  Here is the complete answer:

(x-3)² = 25

There are two possibilities for that since 

(+5)² = 25 and (-5)² = 25 are BOTH TRUE.  Therefore,

(x-3) could either equal to +5 or (x-3) could equal to -5.

So we have two equations and therefore two solutions:

(x-3) = +5  and (x-3) = -5
  x-3 = 5         x-3 = -5 
    x = 8           x = -2

Edwin</pre>