## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$4x^5+x^4+5x^3-8x^2+2x-7$
Removing the grouping symbols and then combining like terms, the given expression, $(3x^5+5x^3-5x^2-3)+(x^5+x^4-3x^2+2x-4) ,$ simplifies to \begin{array}{l} 3x^5+5x^3-5x^2-3+x^5+x^4-3x^2+2x-4 \\\\= (3x^5+x^5)+x^4+5x^3+(-5x^2-3x^2)+2x+(-3-4) \\\\= 4x^5+x^4+5x^3-8x^2+2x-7 .\end{array}