(1+√2-√3)*(1-√2+√3)

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(1+√2-√3)*(1-√2+√3)(1+√2-√3)*(1-√2+√3)(1+√2-√3)*(1-√2+√3)(1+√2-√3)*(1-√2+√3)=[1+(√2-√3)][1-(√2-√3)]=

(1+√2-√3)*(1-√2+√3)
(1+√2-√3)*(1-√2+√3)

(1+√2-√3)*(1-√2+√3)
(1+√2-√3)*(1-√2+√3)
=[1+(√2-√3)][1-(√2-√3)]
=1-(√2-√3)^2
=1-5+2√6
=2√6-4

(1+√2-√3)*(1-√2+√3)
=(1+(√2-√3))*(1-(√2-√3))
=(1-(√2-√3)²)
=1-2+2√6-3
=-4+2√6

(1+√2-√3)*(1-√2+√3)
=1^2-(√2-√3)^2
=1-(2-2√6+3)
=-4+2√6