a) -3000 : 2 + 5(2x-1) = 125
b) 6x -12 = -18
c) 17 + 3(x-1) = 5
d) (x-5) (3x-6) = 0
Tìm số tự nhiên x biết:
a) (10-2x).(3x-18)=0 b) 10 + 2x = 165: 216 c) 28 - 2.(x - 4)2=10 d) (15-x)3.(x2 + 16) = 0 e) 52x - 3 - 2.52 = 52 . 3
f) (8 - x3).(x2 + 16) = 0 j) (2x + 5) + (2x + 10) +(2x + 15) +...+(2x + 95) = 77520
42x-6=1 , 2x-1=16 5x+1= 125 , 52x-3 - 2.52 = 52.3
bn nào giúp mk
2^3.19-2^3.14+1^2020
10^2-[60:(5^6:5^4-3.5)]
160:{17+[3^2.5-(14=2^7:2^4)]}
798+100:[16-2(5^2022)]
t^2+5t-6 khi t=2
(a+b)^2-(b-a)^3+2012 khi a=5;b=a+1
x^3-3x^2y=3xy^2-y^3 khi x=3;y=2
Tìm x biết:
a,3/4.x+1/3=-1/2.
b,-x/4=-9/x.
c,/2x-1/=5.
d,3^2=81.
e,5^2-3 trừ 2.5^2=5^2.3.
Làm rồi mk tích cho.
tìm số tự nhiên x
32x = 81
5x-3 - 2.52 = 52.3
16x < 1284
13)10+2x=45:43
14)52x-3-2.52=52.3
15)71+(26-3x):5=75
16)x-1&=(-8)-17
1 a)(6x+4).5=200
b,71+(26-3x):5=75
c,4(2X-6)=16
D,5^3+2-2.5^2=5^2.3
2)CHỨNG MINH :(3+3^2+3^3+3^4+3^6)CHIA HETcho 3
Bài1 Tìm x thuộc Z
A, 42x-6=1
B, 52x-3-2.52=52.3
