Question 132835
{{{(2r^4 - 2r^3 + 5r^2 + 16r - 10) + (r^5 + 7r^3 + 5r^2 - 5r + 5) + (-5r^4 + r^2 - 6r - 3)}}} Start with the given expression



{{{2r^4-2r^3+5r^2+16r-10+r^5+7r^3+5r^2-5r+5-5r^4+r^2-6r-3}}} Remove the parenthesis




{{{(r^5)+(2r^4-5r^4)+(5r^2+5r^2+r^2)+(-2r^3+7r^3)+(16r-5r-6r)+(-10+5-3)}}} Group like terms



{{{r^5-3r^4+5r^3+11r^2+5r-8}}} Combine like terms