Question 72938
(x + 1)(x^2 + 1)
First multiply the x in the first set of parentheses times everything in the second, then multiply the 1 in the first set of parentheses times everything in the second:
{{{x(x^2+1)+1(x^2+1)}}}
{{{x(x^2)+x(1)+1(x^2)+1(1)}}}
{{{x^3+x+x^2+1}}}  We usually write this in descending order. 
{{{highlight(x^3+x^2+x+1)}}}
Happy Calculating!!!!!