Question 316455
Let A and B be the numbers.
{{{A-B=8}}}
{{{AB=17}}}
You know that
{{{(A-B)^2=A^2-2AB+B^2}}}
{{{A^2+B^2=(A-B)^2+2AB}}}
{{{A^2+B^2=(8)^2+2(17)}}}
{{{A^2+B^2=64+34}}}
{{{highlight(A^2+B^2=98)}}}