Question

помогите решить 1(22), 3(5),4(1,2,5)

Answer 1

1(22)
3^x * 5^2x * 5^-3=45
3^x * 25^x * 1/5^3=45
3^x * 25^x * 1/125=45
(3*25)^x * 1/125=45
1/125 * 75^x=45
75^x=5625
75^x=75^2
x=2