Answer:
[tex]x^2+2x+1[/tex]
Step-by-step explanation:
When given the following trinomial,
[tex](x+1)(x+1)[/tex]
Distribute, multiply every term in one of the parenthesis by every term in the other,
[tex](x)(x)+(1)(x)+(1)(x)+(1)(1)[/tex]
Simplify,
[tex]x^2+x+x+1[/tex]
Combine like terms
[tex]x^2+2x+1[/tex]
