Các câu hỏi tương tự
Tìm x; biết: 3x + 3x+1 + 3x+2 + 3x+3 = 1080
3x + 3x+1 + 3x+2 = 117
Chứng minh rằng : 3x+1 + 3x+2 +3x+3 +...+3x+11+ 3x+12 chia hết cho 39 ,x là số tự nhiên
3 x +3x+1+3x+2+3x+3=29160
3 x +3x+1+3x+2+3x+3=29160
CMR (x^2+3x)^2+2(x^2×3x) =(x^2+3x+1)^2
a)2x+2x+1+2x+2=56
b)3x+3x+2+3x+3=111
Tìm x
a) -3 1/2 : (4/5-1/2x) = 2^2
b) 2x + 3x = 5
c) -2/3x - 1/3x = -2
d) -2/3 (x+1) - 1/2 = -1/3
\(\left(3x-1\right)^3=25.\left(3x-1\right)\)
\(\left(3x-14\right)^3=2^5.5^2+200\)
tim x :3x+3x+1+3x+2=177