Jawabanmu

2014-08-22T09:27:56+07:00
(1/3)⁴ x (√3)⁵x + ¹ = 81
⇒ (3⁻¹)⁴ . (3¹/²)^5x+1 = 3⁴
⇒ 3⁻⁴ . 3^5/2x + 1 = 3⁴
⇒3^(5/2x - 7/2) = 3⁴
⇒5/2x - 7/2 = 4
⇒ 5/2x = 4 + 7/2
⇒ 5x = 15
⇒x = 3