Please jawab beserta caranya ya..pemangkatan al jabar

(3p + 9)^2
=(3p+9)*(3p+9)= 9p^2 + 27 p +27p +81 = 9p^2 + 54p+81

(4a+2b)^2
=(4a+2b)(4a+2b)=16a^2 + 8ab + 8ab + 4b^2 = 16 a^ 2+ 16ab+4b^2