(2x+3) . 5^2=5^4
2x+3 = 5^4 : 5^2
2x+3 = 5^2
2x+3 =25
2x = 25-3
2x=22
x=22:2
vậy x = 11
a) \(\left(2x+3\right)\cdot5^2=5^4\)
\(2x+3=5^2=25\)
\(2x=22\)
\(x=11\)
b) \(\left(32-2x\right)\cdot2=2^3\)
\(32-2x=2^2=4\)
\(2x=28\)
\(x=14\)
( 2x +3 ) .5^2 = 5^4
<=> 25 (2x+3)=625
<=>2x+3 = 25
<=>2x = 22
<=> x = 11
(32 - 2x ).2 = 2^3
32 - 2x = 8 : 2
32 - 2x = 4
-2x = -28
x = 14
(32-2x) . 2 = 2^3
32-2x = 2^3:2
32-2x = 2^2
32-2x=4
2x=32-4
2x=28
x=28:2
vậy x = 14