125 - 5 . (4 + x) = 15
5 . (4 + x) = 125 - 15 = 110
4 + x = 110 : 5 = 22
x = 22 - 4 = 18
125 - 5 . (4 + x) = 15
5 . (4 + x) = 125 - 15 = 110
4 + x = 110 : 5 = 22
x = 22 - 4 = 18
x³ =125
4⁵:4³=
8¹² . 8³ : 8¹⁵=
7¹⁵ : 7¹³=
17¹⁵. 17¹⁰: 17²²=
5¹⁰ . 25 : 5¹¹=
15¹⁰ .225 : 15¹¹=
a, 2x . 4 = 128
b, x15 = x 1
c, (2x + 1)3 = 125
d, (x – 5)4 = (x - 5)6
e, x10 = x
f, (2x -15)5 = (2x -15)3
X = [ 33/5 CHIA 6 - 0, 125 x 8 CONG 32 / 15 x 0,03 ] x 11/4
a) x^4 = 32
b) (2y + 3 )^3 = 125
c) 3x^2 - 15 = 12
d) 2^5 : x^5 = 2^15
3) Tìm x của N biết a) 80 - ( 2 + 2x ) : 2 = 40 b) 11^2 - 121 = 0 c) 5^x+3 - 7 × 5^2 = 5^2 × 18 d) x^10 = x e) x^10 = 1^x g) ( 2x - 15 )^5 = ( 2x - 15 )^3 4) Thực hiện phép tính a) 5^3 ÷ 5^2 + 2^2 × 3 b) 4^3 × 125 - 125 ÷ 5^2 c) 6^2 × 28 + 72 × 6^2 d) 5^6 ÷ 5^4 + 3 × 3^2 - 80 e) 2^3 × 19 - 2^3 × 14 × 1^2021
Tìm x,biết:
A) 8 + ( x - 9)= 125 - 64
B) 5×(x+7) -10 = 8×5
C) 7 × 7 - 7( 13 - 2× x) = 14
D) 320 : (x - 1) = ( 125 - 5 ×5 ) : 4 + 15
E) 240 : ( x -5 ) = 4 × 5 ×5 - 60 : 3
F) 49 × x - 14 × x = 49 × 10 - 70
(x+15)-125=57 : 55
720: [ 41-( 2x - 5 )= 23 .5
27- 3 ( x + 4 ) =23
2015x . 53 = 125
Tìm x biết
a, (x+1) . (x^2-4) =0
b, x^15 = x
c, (x-5)^4 = (x-5)^6
d, (2.x+1)^3 =125
a 10x+2^2.5=10
b 125-5(4+x)=15
c 2^6+(218-x)=73