Question

5 raised to power x-1 * 2 raised to power x-1=400

Answer 1

Answer:

5^(x-1)*2^(x-1) = 400

=> (10)^(x-1) = 400

=> log10^(x-1) = log400

=> (x-1)*1 = log4 + 2log10

=> x-1 = 0.6020+2

=> x = 3.6020