To solve the quadratic equation \( x^2 - 16x + 64 = 0 \) using the perfect square trinomial pattern, we can rewrite the left side as a squared binomial.
The expression \( x^2 - 16x + 64 \) can be factored as:
\[ (x - 8)^2 = 0 \]
Now, to solve for \( x \), we take the square root of both sides:
\[ x - 8 = 0 \]
This simplifies to:
\[ x = 8 \]
Thus, the solution to the equation is:
x equals 8.