Question

Cum se face (2+radical de 3)totul la 2 - 4 radical de 3

Ms anticipat

Answer 1

2√3•2√3-4√3=4√3-4√3= 0

Answer 2

$(2+\sqrt 3)^2-4\sqrt 3 =2^2+2 \cdot 2 \cdot \sqrt 3+\sqrt 3^2-4 \sqrt 3= \\ =4+4 \sqrt 3+3-4 \sqrt 3=4+3=\boxed{7}$