(х+6)(х+5)

To simplify the expression \((x + 6)(x + 5)\), you can use the distributive property (also known as the FOIL method for binomials):

\[ (x + 6)(x + 5) = x(x + 5) + 6(x + 5) \]

Distributing \(x\) and \(6\):

\[ = x^2 + 5x + 6x + 30 \]

Now, combine like terms:

\[ = x^2 + 11x + 30 \]

Thus, the simplified expression is:

\[ x^2 + 11x + 30 \]