Question

(1+2√3-1)^2 pls answer this...

Answer 1

(1+ 2√3- 1)^2
=(2√3)^2
=2^2*√3^2
=4*3
=12

Answer 2

$(1 + 2 \sqrt{3} - 1) ^{2} \\ \\ (2 \sqrt{3)} {}^{2} \\ \\ 4 \times 3 \\ 12$