Question 60723
                multiplying polynomials 
 
{{{r^3(2r^2-5r-1)}}}
{{{r^3(2r^2)+r^3(-5r)+r^3(-1)}}}
{{{2r^(3+2)-5r^(3+1)-r^3}}}
{{{highlight(2r^5-5r^4-r^3)}}}
Happy Calculating!!!