mohon bantuann nya kakak kakak

[tex]a) \: goh = 3 {x}^{2} \\ fo(goh) = 3 {x}^{2} + 1 \\ b) \: fog = 3x + 1 \\ (fog)oh = 3 {x}^{2} + 1 \\ c) \: gofoh = 3(x + 1) = 3x + 1 = 3 {x}^{2} + 1 \\ d) \: fogoh = 3x + 1 = 3 {x}^{2} + 1 \\ e) \: hogof = ( 3{x})^{2} = ( {3(x + 1))}^{2} = 9( {x}^{2} + 2x + 1) = \\ 9 {x}^{2} + 18x + 9[/tex]