Witch strategy is the most appropriate strategy to solve the fallowing? ( x - 1 )^2 = 9 a) zero prodtuck property b) quadratic formula c) square root property

We can't use the Zero Product Property the way the equation is written, because it is not equal to zero. We could expand it and re-factor it, but there are easier methods.

The quadratic formula works for a quadratic in standard form , so we would have to expand and simplify the equation.

That leaves us with the square root method. Notice that both  and 9 are perfect square. We take the square root of both sides and solve accordingly.

The answer is C.