Question 544576
{{{3b^2+9b/b^4-9b^2}}} u need to add like terms
{{{highlight(3b^2-9b^2)+9b/b^4}}} shown here
{{{-6b^2+9highlight(b^1/b^4)}}}cancel a {{{b^1}}} out shown here
{{{highlight(-6b^2+9/b^3)}}} take out 3 shown below
{{{3(-2b^2)+3(3/b^3)}}}
{{{3(-2b^2+3/b^3)}}}