<PRE><B>Question 146471</B>
p(x) = 6x^3+ x^2+5x +2

q(x) = 2x^3 +5x^2-7x-3

p(x)+q(x) = 6x^3 +x^2 +5x + 2 + 2x^3 +5x^2 -7x-3
         = 8x^3 + 6x^2  -2x -1                  (adding like terms)

q(x) - p(x) = 2x^3 +5x^2 -7x -3 -(6x^3 +x^2 +5x +2)
            = 2x^3 + 5x^2 -7x-3 -6x^3 - x^2 -5x - 2

            = -4x^3 +4x^2 - 12x -5     (adding like terms )</PRE>