\(\left(2x+1\right)^3=27\)
=>\(\left(2x+1\right)^3=3^3\)
=>2x+1=3
=>2x=2
=>x=1
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\(\left(2x+1\right)^3=27\)
=>\(\left(2x+1\right)^3=3^3\)
=>2x+1=3
=>2x=2
=>x=1
tìm x
a) x: 27=3,6
b)\(\dfrac{2x+1}{-27}\) =\(\dfrac{-3}{2x+1}\)
tìm x trong các tỉ lệ thức sau:
a,x:27=-2 : 3,6
b,2x+1/-27= -3/2x+1
Tìm x biết:
2x-1/3 = 27/2x-1
Tìm x :
1/27 + ( 2x - 1/3 ) mũ 3 = 1/3
7(x+1)+3x=27 B,(x+2) (3-2x)+x=2x^2-3
(2x-1)\(^3\)=\(\dfrac{-1}{27}\)
3x+1= 27
(2x-1)3=8
Tìm x:
\(a\)) \(\dfrac{2}{3}+\left(x-\dfrac{1}{2}\right)^3=\dfrac{19}{27}\)
\(b\)) \(\left(\dfrac{3}{2}\right)^{2x-1}:\left(\dfrac{27}{8}\right)^3=\dfrac{81}{16}\)
\(c\)) \(\dfrac{1}{2}.2^x+4.2^x=9.2^5\)
\(d\)) \(\text{12 - (2x +1)}^2=-69\)
Tìm x, biết :
a, ( 1 - 2x ) ^ 3 = - 8
b, ( 2x - 1 ) ^ 3 = - 27
(2x-1)mũ 3 -27=0