How do you expand \( (x+3)^2 \)?

How do you expand \( (x+3)^2 \)?

=> \( (x+3)^2 \)

There are two way to expand \( (x+3)^2 \)

First,

=> \( (x+3)^2 = (x+3) (x+3) \)

=> \( (x+3)^2 = x (x+3) + 3(x+3) \)

=> \( (x+3)^2 = x^2 +3x + 3x + 3^2 \)

=> \( (x+3)^2 = x^2 +6x  + 9 \)

Second,

\( (x+3)^2 \) [use \( (a+b)^2 = a^2 + 2ab +b^2 \)]

=> \( x^2+2 \times x \times 3 + 3^2 \)

=> \( x^2+6x + 9 \)

Expand Form of  \( (x+3)^2 =x^2+6x + 9 \)