Răspuns:
a) \((2 + \sqrt{3})^2 = 4 + 4\sqrt{3} + 3 = 7 + 4\sqrt{3}\)
b) \((\sqrt{3} - 2)^2 = 3 - 4\sqrt{3} + 4 = 7 - 4\sqrt{3}\)
c) \((2\sqrt{2} - \sqrt{3})^2 = 8 - 4\sqrt{6} + 3 = 11 - 4\sqrt{6}\)
d) \((2x - 3)^2 = 4x^2 - 12x + 9\)
e) \((x - 4)^2 = x^2 - 8x + 16\)
f) \((3x + 6)^2 = 9x^2 + 36x + 36\)
