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(49²) ⁴ : (7² .7⁶)² + 3⁵ : 81​

Răspuns :

(49^2)^4 = ((7^2)^2)^4) = 7^(2*2*4) = 7^16

(7^2 * 7^6)^2 = (7^(2+6))^2 = (7^8)^2 = 7^(8*2) = 7^16

3^5 = 3^5
81 = 3^4

Deci, ecuatia devine:
7^16 : 7^16 + 3^5 : 3^4 =
= 7^(16-16) + 3^(5-4) = 7^0 + 3^1 = 1 + 3= 4