For the function $\mathrm{????}(\mathrm{????})=2\mathrm{????}2+5\mathrm{????}+27,$ construct and simplify the difference quotient $\frac{\mathrm{????}(\mathrm{????}+ℎ)-\mathrm{????}(\mathrm{????})}{ℎ}$ by completing the following steps. All entries should be provided without parentheses.

STEP $1$

STEP $2$

$\mathrm{????}(\mathrm{????}+ℎ)=$

$\mathrm{????}(\mathrm{????})=$