Divide Divide x^2+8x+15 by x+3

Consider the form ${\displaystyle x^2+bx+c}$. Find a pair of integers whose product is ${\displaystyle c}$ and whose sum is ${\displaystyle b}$. In this case, whose product is ${\displaystyle 15}$ and whose sum is ${\displaystyle 8}$.

Write the factored form using these integers.

Cancel the common factor.

Divide ${\displaystyle x+5}$ by ${\displaystyle 1}$.