Given:
The quadratic equation is:
\[
x^2 - 5x + 6 = 0
\]
Step 1: Factorize the quadratic equation
We look for two numbers that multiply to \( 6 \) and add up to \( -5 \). These numbers are \( -2 \) and \( -3 \).
Thus, we can factorize the quadratic as:
\[
(x - 2)(x - 3) = 0
\]
Step 2: Solve for \( x \)
From the factored form, we have:
\[
x - 2 = 0 \quad \Rightarrow \quad x = 2
\]
\[
x - 3 = 0 \quad \Rightarrow \quad x = 3
\]
Answer: The correct answer is option (1): 2 and 3.