Question 56716
If {{{f(x)=x^2+5}}}, find f(a+h)-f(a)
{{{f(a+h)=(a+h)^2+5=a^2+2ah+h^2+5}}}
{{{f(a)=a^2+5}}}
{{{f(a+h)-f(a)=(a^2+2ah+h^2+5)-(a^2+5)}}}
{{{f(a+h)-f(a)=a^2+2ah+h^2+5-a^2-5}}}
{{{f(a+h)-f(a)=2ah+h^2}}}
Happy Calculating!!!