Multiply and combine like terms: (2x+1/6)^2
expanding:
(2x+1/6)(2x+1/6)
4x^2+x/3+x/3+1/36
combining like terms:
3x^2+2x/3+1/36
i hope this helped! please correct me if i am wrong:)
I think you made a typo :)
The answer is 4x^2+2/3x+1/36, not 3x^2+2/3x+1/36
(Latexed)
(2x+16)(2x+16)
Multiply
4x2+23x+136
Annnd that's your answer!