(x+\sqrt2-\sqrt3)^2
I sposób
(x+\sqrt2-\sqrt3)^2=(x+\sqrt2-\sqrt3)(x+\sqrt2-\sqrt3)=
=x^2+\sqrt2x-\sqrt3x+\sqrt2x+2-\sqrt6-\sqrt3x-\sqrt6+3=
=x^2+2\sqrt2x-2\sqrt3x-2\sqrt6+5=
=x^2+2x(\sqrt2-\sqrt3)-2\sqrt6+5
II sposób
(x+\sqrt2-\sqrt3)^2=[x+(\sqrt2-\sqrt3)]^2=
=x^2+2x(\sqrt2-\sqrt3)+(\sqrt2-\sqrt3)^2=
=x^2+2x(\sqrt2-\sqrt3)+2-2\sqrt6+3=
=x^2+2x(\sqrt2-\sqrt3)-2\sqrt6+5