Answer:
[tex]x^2+2x+1[/tex]
Step-by-step explanation:
When given the following expression,
[tex](x+1)(x+1)[/tex]
One must multiply every term in one of the parenthesis by every term in the other, thus, the resulting expression formed,
[tex](x)(x)+(1)(x)+(1)(x)+(1)(1)[/tex]
After distributing, simplify the expression, perform the multiplication and combine like terms,
[tex]x^2 + 2x + 1[/tex]
