$(1-sqrt2)^2+(2sqrt2-3)^2-(3sqrt2-4)(4+3sqrt2)=$

A cura di: Francesco Speciale

esegui le operazioni  $(1-sqrt2)^2+(2sqrt2-3)^2-(3sqrt2-4)(4+3sqrt2)=$

---

$(1-sqrt2)^2+(2sqrt2-3)^2-(3sqrt2-4)(4+3sqrt2)=(1+2-2sqrt2)+((4*2)+9-12sqrt2)-(18-16)=$
$=3-2sqrt2+8+9-12sqrt2-2=18-14sqrt2=2(9-7sqrt2)$.