what is the answer for (3+x)^2
(3+x)(3+x)(9+3x+3x+x^2) or (x^2+6x+9)
\(Use:(a+b)^2=a^2+2ab+b^2\\\\(3+x)^2=3^2+2\times3\times x+x^2=9+6x+x^2\)
