jawab pake cara ya please.....

[tex]identitas = > {sin}^{2}x + {cos}^{2}x = 1 \\ 1. \: (1 - {sin}^{2} x) = {cos}^{2} x\\ 2. \: {sin}^{2} x + {cos}^{2} x - 2 \sin(x) \cos(x) = 1 - 2 \sin(x) \cos(x) \\ 3. \: 3 \: {cos}^{2} x = 3(1 - {sin}^{2} x) = 3 - 3 {sin}^{2} x \\ 4. \: {sin}^{2} x + {cos}^{2} x + 2 \sin(x) \cos(x) = 1 + \sin(2x) \\ 5. \: {sin}^{2} x + {cos}^{2} x - 2 \sin(x) \cos(x) + 2 \sin(x) \cos(x) = 1[/tex]
no.4 tidak sesuai