Question

Please answer the question

Answer 1

Answer:

5^x+5^(x-1)=750

=> 5^(x-1) {5+1}=750

=> 5^(x-1).6=750

=> 5^(x-1)=750/6=125

=> 5^(x-1)=125

=> 5^(x-1)=(5)^3

=> x-1=3

=> x=3+1

=> x=4

value of x=4