Răspuns:
Explicație pas cu pas:
(27/5)^4 = 3^12/5^4
(5/9)^5 = 5^4/3^10
3^12/5^4 x 5^4/3^10 = 3^2 = 9
3⁴
(5 2/5)⁴ x (5/9)⁴ =
= [(5ₓ5+2)/5]⁴ x 5⁴/9⁴
= 27⁴/5⁴ x 5⁴/9⁴
= (3³)⁴/(3²)⁴
= 3¹²/3⁸
= 3¹²⁻⁸
= 3⁴
