Question

efectuati:(2+^3) la2

Answer 1

$(2+ \sqrt{3} )^{2} = 2^{2} +2*2* \sqrt{3}+ (\sqrt{3})^2 =4+4 \sqrt{3} +3=4 \sqrt{3}+7$

am aplicat formula (a+b)²=a²+2ab+b²