Question 940994
I think this is what you're asking,
{{{f(x)=sqrt(x-4)/(x^2-9)}}}
So find {{{f(4.3)=f(43/10)}}}
{{{f(43/10)=sqrt(43/10-4)/((43/10)^2-9)}}}
{{{f(43/10)=sqrt(43/10-40/10)/((1849/100)-900/100)}}}
{{{f(43/10)=sqrt(3/10)/(949/100)}}}
{{{f(43/10)=(sqrt(30)/10)/(949/100)}}}
{{{highlight(f(43/10)=(10sqrt(30))/949)}}}