(23 + 2)n + 32 . n . 5 + 20 = 3 . 52
(8 + 2)n + 9 . n . 5 + 20 = 3. 25
10 . n + 45 . n + 20 = 75
n . ( 10 + 45) = 75 - 20
n . 55 = 55
n = 55 : 55
n = 1
Vậy n = 1
Ủng hộ mk nha !!!!
\(\left(2^3+2\right)n+3^2.n.5+20=3.5^2\)2
\(10n+45n+20=75\)
\(n\left(10+45\right)=75-20\)
\(55n=55\)
\(n=\frac{55}{55}=1\)
vậy n=1.