Solve this problem using the FOIL method; first, outside, inside, last.
Multiply the first numbers (x * x)
Multiply the outside numbers (x * 6)
Multiply the inside numbers (2 * x)
Multiply the last numbers (2 * 6)
____________________________________________________________
(x + 2)(x + 6)
x² + 6x + 2x + 12
Combine like terms.
[tex] \boxed {x^2 + 8x + 12} [/tex]