If its asking you to expand use foil rewrite as a double bracket (3x+6)(3x+6) multiply the first terms of each bracket 3x*3x=9x^2 multiply the outside terms on each bracket 3x*6=18x multiply the inside terms on each bracket 6*3x=18x multiply the last terms in each bracket 6*6=36 Collect the terms 9x^2+18x+18x+36 Simplify 9x^2+36x+36
