Question 1032756
You need values for a and b to evaluate your expression.  Otherwise you can only simplify your expression.


{{{16a^2+24ab+9b^2-(16a^2-24ab+9b^2)+48ab}}}
{{{16a^2+24ab+9b^2-16a^2+24ab-9b^2+48ab}}}
{{{48ab+48ab}}}
{{{96ab}}}-------------SIMPLIFIED, but not evaluated