Question

\(x^2+2x+1\)

Answer 1

=\(\text{(x+1)}^2\)

Answer 2

\(x^2+2x+1=x^2+x+x+1=\left(x^2+x\right)+\left(x+1\right)\)

\(=x.\left(x+1\right)+\left(x+1\right)=\left(x+1\right)^2\)

Chúc bạn học tốt!!!

Answer 3

=( \(x^2\)+x)+(x+1)

=(x+1)(x+1)

=\(\left(x+1\right)^2\)

Answer 4

(x+1)² nha bạn

Answer 5

x2+2x+1

=\(x^2+2x+1^2\)

=\(\left(x+1\right)^2\)

chúc bn học tốt