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aratati ca numuaru N=(3√3-2√2)² -(2√5-1)(2√5+1)+12√6 este natural


Daca a=√4-√15+√4+√15 calculati a²

Varog dau 20 de puncte imi trebue urgent


Răspuns :

N=(3√3-2√2)^2-(2√5-1)(2√5+1)+12√6
N=[(3√3)^2-2×3√3×2√2+(2√2)^2]-[(2√5)^2-1]+12√6
N= (27-12√6+8)-(20-1)+12√6
N=35-12√2-19+12√6
N=16. => 16€|N

a=√4-√15+√4+√15
a=2-√14+2+√15
a=4.

a^2=4^2
a^2=16.


Sper ca te-am ajutat :)