Tìm x, biết:
a) \(\left(x-2\right)^{2x+3}=\left(x-2\right)^{2x+1}\left(x\in Z\right)\)
b) \(x^2+2x=0\)
c) \(\left(x^4+0,0001\right)\left(x+1995\right)=0\)
d) \(\left(x-2\right)+3x^2-6x=0\)
1) a) (x-\(\dfrac{1}{2}\))^2=0
b) (x-2)^2=1
c)(2x-1)3=-8
d)(x+\(\dfrac{1}{2}\))^2=\(\dfrac{1}{16}\)
(x-2)2x+3= (x-2)2x+1 (x thuộc N )
(2x - \(\frac{1}{3}\))2x = (x+1)2x(x thuộc N)
Tìm x,y biết :
1) 5x+5x+2=650
2) xy=x4
3) ( x-11+y )2 + ( x-4-y ) 2 = 0
4) ( 3x-5 ) + ( 2y+1 ) 200 < 0
5) 2x=4y-1 và 27y=3x+8
6) 10x:5y=20y
7) 2x+1.3y=22x.3x
(1/2)^2.x=(1/2)^5
(-1/3)^3.x=(1/81)
(2x-3)^2=16
1/ tìm x,biết:
(4x-3)4=(4x-3)2
2/có hay không số hữu tỉ x thỏa mãn:
(2x+3)2+(3x-2)4=0
1. Tìm x \(\in\) Q, biết
a) (x-\(\dfrac{1}{3}\))\(^2\) = 0
b) (x+\(\dfrac{1}{2}\))\(^2\) = \(\dfrac{1}{16}\)
c) (2x-1)\(^3\) = 8
Giúp mk vs
a) x mũ 2= 2x b) x mũ 3-x=0
1. Tìm x :
x^3 - 1/2 = (-3)/8
(2x - 1)^3 = -8
17 + "3^x" = 98 (3 mũ x nha)
(2x +3)^2 = 9/121
2. Tính
2.1/9 : (1/3)^2 + (201/202)^2018 .(202/201)^2018
giúp mình với ^^
