Question

3.5 mũ x = 60. 5 mũ 8+ 15.25 mũ 4

Answer 1

3.5^x = 60.5⁸ + 15.25⁴

3.5^x = 3.4.5.5⁸ + 3.5.5⁸

3.5^x = 3.5⁹.(4 + 1)

3.5^x = 3.5¹⁰

Vậy x = 10

Answer 2

             Bài làm

\(3.5^x\)= \(60.5^8\)+ \(15.25^4\)

\(3.5^x\)= \(3\).\(4\).\(5\).\(5^8\)+ \(3.5\).\(5^8\)

\(3.5^x\)= \(3\). \(5^9\).\(\left(4+1\right)\)

\(3.5^x\)= \(3\).\(5^9\). \(5\)

\(3.5^x\)= \(3\).\(5^{10}\)

=> x      = 10

Vậy: x=10