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sa se arate ca (3^10)^4.(5^8)^5+15^7^2:15^2^3 este patrat perfect
Dau coroana!!URGENT


Răspuns :

 (3^10)^4×(5^8)^5+15^7^2:15^2^3 =
=
 3^40×5^40+15^49:15^8 =
= 15^40+15^41 =
= 15^40×(1+15 )=
= 15^40×16=
= 15^40×2^4=
=(15^20×2^2)²  deci patrat perfect