Answer:
x^5+5x^4−x^3
Explanation:
Expand by distributing terms
x^3x^2+x^3*5x-x^3
Use the product rule x^a+x^b=x^a+b
x^3+2 +x^3*5x-x^3
Simplify 3+2 to 5
x^5+x^3*5x-x^3
Regroup
x^5+5x^33-3^3
Use product rule x^a+x^b=x^a+b
x^5+5x^3+1 -x^3
Simplify 3+1 to 4
x^5+5x^4−x^3