(3250 : 100) x 5
5^x+2 = 3250 - 5^2
tim x:
5^x+5^x-2=3250
\(5^x+5^{x-2}=5^{x-2}.5^2+5^{x-2}.1=5^{x-2}\left(5^2+1\right)=5^{x-2}.26=3250\Rightarrow5^{x-2}=\frac{3250}{26}=125=5^3\)
\(\Rightarrow x-2=3\Leftrightarrow x=5\)
5^x+5^x+2=3250 ?
5x + 5x+2 = 3250
=> 5x + 5x.52 = 3250
=> 5x.(1 + 52) = 3250
=> 5x.(1 + 25) = 3250
=> 5x. 26 = 3250
=> 5x = 3250 : 26
=> 5x = 125
=> 5x = 53
=> x = 3
Vậy x = 3.
125.5^x+5^x+1 =3250
125 . 5x + 5x+1 = 3250
125 . 5x + 5x . 5 = 3250
5x . ( 125 + 5 ) = 3250
5x . 130 = 3250
5x = 3250 : 130
5x = 25
5x = 52
=> x = 2
Gía trị của x thỏa mãn: 5^x +5^x+2 = 3250
tim x biet 125.5^x+5^(x+1)=3250
125.5x + 5x+1 = 3250
125.5x + 5x.51 = 3250
5x(125 + 51) = 3250
5x.130 = 3250
5x = 3250 : 130
5x = 25
5x = 52
=> x = 2
tìm x
5 mũ x +2=3250-5 mũ x
\(5^{x+2}=3250-5^x\)
\(\Rightarrow5^x.5^2+5^x=3250\)
\(\Rightarrow5^x\left(5^2+1\right)=3250\)
\(\Rightarrow5^x.26=3250\)
\(\Rightarrow5^x=125\)
\(\Rightarrow5^x=5^3\)
\(\Rightarrow x=3\)
Vậy x = 3
- Mấy ac giải hộ êm bài nài với... " Tìm x,y (x<y) thỏa mãn 5x+5y = 3250
( 37 + 18 ) . { 3250 - 152 x [ ( 44 - 25 ) : 16 ]}
Mình làm luôn
55 . { 3250 - 225 . [ ( 256 - 32 ) : 16 ] }
55 . { 3025 . [ 224 : 16 ]}
55 . { 3025 . 14 }
55 . 28350
1559250