d. $6 a^{2}-13 a+6$
\(\boxed{(2a - 3)(3a - 2)}\) is the factored form of the given quadratic expression
Step 1 :Given the quadratic expression: \(6a^2 - 13a + 6\)
Step 2 :Factor the expression manually: \((2a - 3)(3a - 2)\)
Step 3 :\(\boxed{(2a - 3)(3a - 2)}\) is the factored form of the given quadratic expression