\(\left(2x-1\right)^2=\frac14\)
=>\(\left[\begin{array}{l}2x-1=\frac12\\ 2x-1=-\frac12\end{array}\right.\Rightarrow\left[\begin{array}{l}2x=1+\frac12=\frac32\\ 2x=1-\frac12=\frac12\end{array}\right.\Rightarrow\left[\begin{array}{l}x=\frac34\\ x=\frac14\end{array}\right.\)
Tìm x biết :
a, ( x + 1 )2 = ( x + 1 )4
b, ( x - 2 )5 = ( x - 2 )3
c, ( 2x - 1 )2 = ( 2x - 1 )4
(1/2x-2/3)^2=1/4
(1/2x-2/3)^2=1/4
Tìm x biết
1)1/4+1/3:1/2x=-5
2)-4/5-2/3:x=-5/12
(x-3)^2=1
(2x+1)^3=-8
(x-1/4)^2=1/25
Tìm x
1) 1+2+3+4+......+ x=210
2)(2x-15)^5=(2x-15)^3
3)x^10=x
a\(\left(2X-1\right)^6=\left(2X-1\right)^8\)
b \(\left(X-1\right)^{X+2}=\left(X-1\right)^{X+4}\)
bài 1: tìm x, y biết
a) \(4^{x-1}\)+ 5.\(4^{x-2}\)= 576 Với x ∈ N
b) ( 2x - 1)6 = ( 2x -1 )8
c) ( 2x - 5 ) 2000 + ( 3y + 4) 2002 ≤ 0
bài 2 : rút gọn
A = 2100- 299 + 298 - 297 + ... + 22- 2
giúp mình nha mình cần gấp
Tìm x biết:
1)25/12x+11/15=9/10
2)3/2x-2/5=1/3x-1/4
3)29/12[x]-5/6=3/8
4)[4x+3/4]-5/4=2
5)2x+2x+3=144
