b) \(2x=\left(3,8\right)^3:\left(-3,8\right)^3\)
\(\Rightarrow2x=-1\)
⇒ \(x=\left(-1\right):2\)
⇒ \(x=-\frac{1}{2}\)
Vậy \(x=-\frac{1}{2}.\)
Chúc bạn học tốt!
4. Tìm x biết:
a) (3x - 7)5 = 0;
b) \(\frac{1}{4}\) - (2x - 1)2 = 0;
c) \(\frac{1}{16}\) - (5 - x)3 = \(\frac{31}{64}\);
d) 2x = (3,8)3 : (-3,8)2;
e) \(\left(\frac{27}{64}\right)^9\). x = \(\left(-\frac{3}{4}\right)^{32}\);
f) \(5^{\left(x+5\right)\left(x^2-4\right)}\) = 1;
g) (x - 2,5)2 = \(\frac{4}{9}\);
h) \(\left(2x+\frac{1}{3}\right)^3=\frac{8}{27}\)
bài 3: Tìm x
a) ( x - 3 phần 2 )3 = 1 phần 64
b) ( 2x-3)2 -16 =20
Bài 1: Tìm x, biết
\(a,\frac{2}{3}-\frac{1}{3}.\left(x-\frac{3}{2}\right)-\frac{1}{2}.\left(2x+1\right)=5\)
\(b,\left(x+\frac{1}{2}\right).\left(x-\frac{3}{4}\right)=0\)
\(c,\left(2x-5\right)^4=81\)
\(d,3^{x+1}+3^{x+3}=810\)
Tìm x biết : a)\(1-\dfrac{1}{2}.\left(\dfrac{3}{2}-2.x\right)=4.x-\dfrac{1}{4}\) b):\(x^{10}=1024\) c) 3x = 81
Tìm x biết :
a, ( x + 1 )2 = ( x + 1 )4
b, ( x - 2 )5 = ( x - 2 )3
c, ( 2x - 1 )2 = ( 2x - 1 )4
A= 1-|2x-3|
B= |x-3|-|5-x|
C=4-|5x+2|-|3y+12|
D=5-3(x+1)^2
E=1/2(x+1)^2+3
F=15/4+3|x-1|
G=2021/2020+2019(x-2108)^2
bài 1 tìm x biết
a/ \(\dfrac{2}{3}x+\dfrac{1}{2}=\dfrac{-1}{5}x+\dfrac{3}{4}\)
b/ (x-3)5 \(=32^2\)
c/ \(\left(2x+1\right)^3=27^2\)
d/ \(5^{x+3}=0,04\)
e/ \(x^2+2x-24=0\)
f/ \(x^2-10x+21=0\)
Nhờ mọi người giúp mình vs!
Tìm x thuộc Q khi:
a)3x-1 =243
b)\(\left(\dfrac{2}{3}\right)^{x+1}=\dfrac{8}{4}\)
c) 3x+3x+2=270
d) \(\left(x-\dfrac{5}{2}\right)^2=144\)
e) \(\left(2x+1\right)^3=\dfrac{215}{27}\)
f) (2x-1)5 = -243
h) (27-1)2 = (2x-1)2
i) (2x+1)2 + (x+1)10 = 0
k) \(\dfrac{x-2}{5}=\dfrac{X+3}{2}\)
l) \(\dfrac{2}{x}=\dfrac{x}{50}\)
m) \(\dfrac{\left(x-3\right)}{4}=\dfrac{4}{x+3}\)
n) \(|x+\dfrac{3}{5}|-|x-\dfrac{7}{3}|\)
Tìm x
1) 1+2+3+4+......+ x=210
2)(2x-15)^5=(2x-15)^3
3)x^10=x
