52x-3-2.52=52.3
52x-3=2.52+52.3
52x-3=125
52x-3=53
=>2x-3=3
2x=3+3
2x=6
x=6:2
x=3
CHÚC BN HOK TỐT!
5^2x-3=5^2.3+-5^2.2
5^2x-3=5^2*5
5^2*x-3=5^3
2*x-3=3
2*x=3+3
2*x=6
x=6:2
x=3
t i c k cho minh nha
ok
\(5^{2x-3}\) - 50 = 75
\(5^{2x-3}\)= 125 = \(5^3\)
=> 2x - 3 = 3
=> 2x = 3 + 3 = 6
=> x = 6 : 2
vậy x = 3
k đi