\(2^x+2^{x+3}=144\Leftrightarrow2^x.8=144\)
\(\Leftrightarrow2^x=144:8=18\)(vô lí)
Vậy không có x
Sai ròi :
\(2^x+2^{x+3}=144\)
=> \(2^x\left(1+2^3\right)=144\)
=> \(2^x\cdot9=144\)
=> \(2^x=16\)
=> \(2^x=2^4\)
=> x = 4
\(2^x+2^{x+3}=144\Leftrightarrow2^x.8=144\)
\(\Leftrightarrow2^x=144:8=18\)(vô lí)
Vậy không có x
Sai ròi :
\(2^x+2^{x+3}=144\)
=> \(2^x\left(1+2^3\right)=144\)
=> \(2^x\cdot9=144\)
=> \(2^x=16\)
=> \(2^x=2^4\)
=> x = 4
2x + 2x+3 = 144
2x+2x+3=144
2x-2 . 3y-3 . 5z-1 = 144
giúp tui với
Tìm x
2x+2x+3=144
a) 2x+2x+3=144
b) 72x+72x+2=2450
Tìm x biết a) 2x+2^(x+3) =144
b) 81^(-2x)*27^x =9^5
a) (2x-1)^4=8^1
b) (x-1)^5= -32
c) 2^x +2^x+3=144
d) (2x-1)^6=(2x-1)^8
e) (x-7)^x+3 -(x-7)^x+1=0
1,( 2x - 7 )3 = \(\dfrac{26}{63}\)
2,( 7 - 3 x )2 = \(\dfrac{25}{144}\)
3,| 2 x - 3 = x + 1 |
4,| 3x + 1 | = 5
a)22+2x+3=144
b)(\(\sqrt{9}+\sqrt{4}\)).\(\sqrt{x}\)=10
c)(x+\(\dfrac{1}{2}\))2=\(\dfrac{4}{25}\)
Tìm số hữu tỉ , biết :
a) ( 2x - 1) 6 = ( 2x - 1)8
b) 2x + 2x+3 = 144