Question 310970
Distribute the (-1) on the right hand side,
{{{(14a^2-29ab-13b^2)-(9a^2-16ab+17b^2)= (14a^2-29ab-13b^2)+(-9a^2+16ab-17b^2)}}}
Group like terms,
{{{(14a^2-29ab-13b^2)-(9a^2-16ab+17b^2)= (14a^2-9a^2)+(-29ab+16ab)+(-13b^2-17b^2)}}}
Add and simplify,
{{{(14a^2-29ab-13b^2)-(9a^2-16ab+17b^2)= 5a^2+(-13ab)+(-30b^2)}}}
{{{(14a^2-29ab-13b^2)-(9a^2-16ab+17b^2)= 5a^2-13ab-30b^2}}}