Question 302214
x^2/x+5+7x+10/x+5

={{{x^2/(x+5) + (7x+10)/(x+5) }}} 

={{{(x^2+7x+10)/(x+5) }}} 

={{{((x+5)(x+2))/(x+5)}}} 

cancel (x+5)

= x+2