Question

 (2+√3)TOTUL LA PUTEREA A 4A +(2-√3)TOTUL LA PUTEREA A 4A

Answer 1

$(2+ \sqrt{3}) ^{4}= ((2+ \sqrt{3}) ^{2} )^{2} = (7+4 \sqrt{3}) ^{2} =97+56 \sqrt{3}$
$(2- \sqrt{3}) ^{4}=(( 2- \sqrt{3}) ^{2} )^{2}= (1-4 \sqrt{3}) ^{2}=49-8 \sqrt{3}$
Expresia devine:
$97+56 \sqrt{3}+49-8 \sqrt{3} =146+48 \sqrt{3}$