(2x+3/5)^3+8/27=0
(2x+3/5)^3=-8/27
=>(2x+3/5)^3=(-2/3)^3
=>2x+3/5=-2/3
=>2x=-2/3-3/5
=>2x=-19/15
=>x=-19/15:2
=>x=-19/30
Vậy x=-19/30
Nhớ like cho mình nha. Chúc bn học tốt
7-(2x-1/3)^2=3
(2x+1/3)^2-3/8=1/8
12:[29-(x-2/3)^2]=3
(3x-1/2)^3+8/3=29/9-14/27
2(2x-1/3)^2+4/3=5/6+13/18
Tìm X
a. 2x-9=-8-9
b. 3.|x-1|-27=0
Bài 4. Tìm x ∈ N biết:
a) x3 = 27 b) (2x – 1)3 = 8
c) (2x – 3)2 = 9 d) 2x + 5= 3^4 : 3^2
3^4 tức là 3 mũ 4
Tìm x biết:
a,(2x+3/5)^2-9/25=0
b,(3x-1).(-1/2x+5)=0
c, (7/5)^x+1-(1/5)^x=-4/625
d,(2/3)^x+2+(2/3)^x+1=20/27
a) x3=27, b) (2x-1)3=8,c)(x-2)2=16,d) (2x-3)2=9,e)2x+5=34:32,f)(3x-24.73=2.74
Tìm x, biết:
a) (x – 45).27 = 0
b) 45.(2x – 4).13 = 0
c) (x – 3).(x – 5) = 0
Tính:
a) 2^5 x 13^12 x 7^8 : 27 x 13^10 x 7^9
b) 2^n x 11 x 3 : 6^n x 3
c) 5^5 x 7 x 9^5 : 15^10
d) 7 x 8^10 x 27^9 - 8 x 9^13 x 2^27 : 7 x 6^26 x 2^2 - 2^4 x 8^3 x 27^9
e) 2^2^1^2015
f) 2015^0^2015^0^2015
Tìm x:
(2x/3 - 3) : (-10) = 5/3
(3/4 + x)3 = -27/8
5. 91/27 - 56/9 : x = 154/7
4. 1 - ( 43/8 + x - 173/24 ) : 50/3 = 0
-8/5 : 4/5 + | x | = 0,125 * ( -4 )| x + 1/3 | * 17/5 - 12/5 = 21/2x - 2/3x = 7/12 + 3/4x
