A=$\sqrt[]{48-24 \sqrt 3}$ +$\sqrt[]{48+24 \sqrt 3}$
A=$\sqrt{(\sqrt[]{48-24 \sqrt 3} +\sqrt[]{48+24 \sqrt 3})^2}$
A=$\sqrt{(48-24 \sqrt 3)+\sqrt[]{48-24 \sqrt 3} *\sqrt[]{48+24 \sqrt 3}+(48+24 \sqrt 3)}$
A=$\sqrt{96+\sqrt[]{2304-1728}}$
A=$\sqrt{96+24}$
A=√6*$\sqrt{16+4}$
P=$\sqrt[]{x²+2x+1}$ +$\sqrt[]{x²-2x+1}$
P=$\sqrt{(x+1)²}$+$\sqrt{(x-1)²}$
P=lx+1l +lx-1l
\(\left[ \begin{array}{l}P=x+1 +x-1=2x\\P=x+1 +1-x=2\end{array} \right.\)
