To solve the quadratic equation \( x^2 - 16x + 64 = 0 \) using the perfect square trinomial pattern, we first recognize that the left side can be factored.
The expression \( x^2 - 16x + 64 \) can be rewritten as:
\[ (x - 8)^2 = 0 \]
Now, we set the factored equation equal to zero:
\[ (x - 8)^2 = 0 \]
Next, we can take the square root of both sides:
\[ x - 8 = 0 \]
Finally, solving for \( x \) gives:
\[ x = 8 \]
Thus, the solution to the equation \( x^2 - 16x + 64 = 0 \) is:
\[ \text{Response: } x = 8 \]