Question 893234
{{{(x^22-3x^5+x^(-2)-7)*(5x^4)=(x^22)*(5x^4)+(-3x^5)*(5x^4)+(x^(-2))*(5x^4)+(-7)*(5x^4)}}}
{{{(x^22-3x^5+x^(-2)-7)*(5x^4)=(5x^26)+(-15x^9)+(5x^2)+(-35x^4)}}}
{{{(x^22-3x^5+x^(-2)-7)*(5x^4)=5x^26-15x^9-35x^4+5x^2}}}