Answer
Square root property:
If [tex]y^2=b[/tex] then; [tex]y = \sqrt{b}[/tex]
Given the equation:
[tex](x-1)^2=9[/tex]
Using square root property;
Then;
[tex]x-1 = \sqrt{9}[/tex]
Simplify:
[tex]x-1 = 3[/tex]
Add 1 to both sides we have;
[tex]x = 4[/tex]
Therefore, the strategy is the most appropriate strategy to solve [tex](x-1)^2=9[/tex] is square root property and the value of x is 4
