1. tìm x biết
a, (2x - 3)\(^2\) = |3 - 2x|
b, (x - 1)\(^2\) + (2x - 1)\(^2\) = 0
c, 5 - x\(^2\) = 1
d, x - 2\(\sqrt{x}\) = 0
g, (x - 1) + \(\dfrac{1}{7}\) = 0
Tìm x biết : a) x+3/22=-27/121.11/9 b) (3và2/20-2và1/20)x+2/7=3/5 c) |3/2x-5|-1/2=-1/4
tìm x
a, (2x - 3)\(^2\) = |3 - 2x|
b, (x - 1)\(^2\) + (2x - 1)\(^2\) - 0
c, x - 2\(\sqrt{x}\) = 0
d, (x - 1)\(^2\) + 1/7 = 0
Tìm x
X-1/5 = 2x+1/3
X+3/2x-5 = 2/3
2/3 . 3x+1 - 7 . 3x = -405
2x+3 . 5 + 2x+2 . 3 + 2x+1 . 24 = 200
Tìm x
A) 2x(x-5)-x(2x+3)=25
B) (3y^2-y+1)(y-1)+y^2(4-3y)=5/2
C) 2x^2 +3( x-1)( x+1)= 5x(×+1)
a)1/2x+3/5x=-33/22
b) (2/3x -4/7).(1/2+-3/7:x)=0
c) (4/5-2x).(1/3+3/5:x)=0
Tim x
a, 2(x- 1/3)+3x=7/4
b, x-1/3 == 27/x-1
c, 2x +1/x+3= 2x+3/ x +5
Tick nha!
Cho các đa thức :
F(x)=x^3.(3x-1)-x(1+3x^4)
G(x)=x^2(x^2+2)-x(x^4+2x^2+7)+3
H(x)=x^3(-2+2x-x^2)-1/2(5x-3-2x^2)
a) Tính F(x)+G(x)-H(x)=A(x)
F(x)-G(x)-H(x)=B(x)
F(x)+G(x)-2H(x)=C(x)
b) Tìm nghiệm của C(x)
3/2 . x + 3/7 = -4/5
-11/12 . x + 0.25 =5/6
(x - 2)2 =1
(2x - 1)3 = -8
1/ Tìm x biết:
a. (2x-1)3= -27
b, (2x-3)4= 625
c. (x-2)5=(x-2)7
d. 5x+2 + 5x+3 =750