(X + 2) (X +2) - expand and simplify
foil: x^2+2x+2x+4simplify: x^2+4x+4
distribute or FOILdistribute(x+2)(x+2)=(x+2)(x)+(x+2)(2)=(x^2+2x)+(2x+4)=x^2+4x+4foil, first terms, outer terms, innter terms, last terms (multipl ythem)Firstx times x=x^2Outerx times 2=2xInner2 times x=2xLast2 times 2=4add thosex^2+2x+2x+4=x^2+4x+2