hasil dari (3+2√3)² tolong saya sedang uts

[tex] = (3 + 2 \sqrt{3} )^{2} \\ = (3 + 2 \sqrt{3} )(3 + 2 \sqrt{3} ) \\ = 9 + 12 \sqrt{3} + 12) \\ = 21 + 12 \sqrt{3} [/tex]

(3+2√3)^2
= 6√3 + 6√3 + 4√9 + 9
= 12√3 + (4×3) + 9
= 12√3 + 12 + 9
= 12√3 + 21
= 21 + 12√3