Răspuns :
Explicație pas cu pas:
3⁸⁸+3⁸⁷+3⁸⁶=3⁸⁴(3⁴+3³+3²)=3⁸⁴*117
(3⁸⁸+3⁸⁷+3⁸⁶)÷117=3⁸⁴*117/117=3⁸⁴=(3⁴²)²-patrat perfect
(3⁸⁸ + 3⁸⁷ + 3⁸⁶) : 117 =
= 3⁸⁴·(3⁴ + 3³ + 3²) : 117
= 3⁸⁴·(81 + 27 + 9) : 117
= 3⁸⁴ₓ117 : 117
= 3⁸⁴
= 3⁴²ˣ²
= (3⁴²)² patrat perfect