Tìm x biết' \(5^x+5^{x+2}=650\)
tìm x, biết ; 5^x + 5^x+2=650
tìm x biết 5^x+(5^x+2)=650
5x+5x+2=650
=>5x(1+52)=650
=>5x.26=650
=>5x=650:26
=>5x=25
=>5x=52
=>x=2
Vậy x=2
tìm x biết: 5x+5x+2=650
Tìm X,biết: 5X+5X+2=650
5X + 5X.52 = 650
5X + 25. 5X = 650
26.5X = 650
5X = 650 : 26 = 25 = 52
=> X = 2
tìm x biết:\(^{5^x+5^{x+2}=650}\)
5x + 5x+2 = 650
=> 5x . (1 + 52) = 650
=> 5x . 26 = 650
=> 5x = 25 = 52
=> x = 2
\(5^x+5^{x+2}=650\)
\(=>5^x\left(1+5^2\right)=650\)
\(=>5^x.26=650\)
\(=>5^x=5^2\)
\(=>x=2\)
Tìm x, biết: 5x + 5x+2 = 650
5x ( 1 + 25 )=650
=> 5x = 650 :26 =25
=> x=2
Tìm x biết 5x + 5x + 2 = 650
5^x + 5x+2 = 650
5^x + 5^x * 5^2= 650
5^x (1 + 5^2) = 650
5^x * 26 = 650
5^x = 650: 26
5^x = 25
5^x = 5^2
=> x=2
\(5^x+5^{x+2}=650\)
\(\Leftrightarrow5^x\left(1+5^2\right)=650\)
\(\Leftrightarrow5^x.26=650\)
\(\Leftrightarrow5^x=25\)
\(\Leftrightarrow5^x=5^2\)
\(\Rightarrow x=2\)
\(5^x+5^{x+2}=650\)
=> \(5^x+5^x.25=650\)
=>\(5^x.\left(1+25\right)=650\)
=> \(5^x.26=650\)
=>\(5^x=25=>x=2\)
Tìm x biết: 5x + 5x+2 = 650
5x+5x+2=650
5x.(1+52)=650
5x.26=650
5x=25
5x=52
x=2
tìm x biết \(5^x+5^{x+2}=650\)
5x + 5x+2 =650
=> 5x +52.5x = 650
=> 5x . ( 1 + 52) = 650
=> 5x .26 =650
=> 5x = 650 :26 = 25
=> 5x = 52
=> x = 2
Vậy x =2
Ta có :
5x + 5x+2 = 650
5x + 5x x 52 = 650
5x + 5x x 25 = 650
5x x (1 +25 ) = 650
5x x 26 = 650
5x = 650 : 26
5x = 25
5x = 52
x = 2
Vậy x = 2
Tìm x biết
5x + 5x+2 =650