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Calculati folosind formulele de calcul prescurtate:
☆(√3-2)(√3+2)+(√5-3)(√5+3)
☆(√6-√3)(√6+√3)-(√6-√10)(√6+√10)
Dau coroana.Vreau sa vad cum ati facut nu direct raspunsul.


Răspuns :

• (√3-2)(√3+2)+(√5-3)(√5+3)=
(√3)^2-2^2+(√5)^2-3^2=
3-4+5-9=
-1+(-4)=
-5
•.........(ex)=
=(√6)^2-(√3)^2-(√6)^2-(√10)^2=
6-3-6-10=
3-6-10=
-19