Các câu hỏi tương tự
Cho A = 1/1.2 + 1/3.4 + 1/5.6 +.......+ 1/49.50.
B = 1 + 1/2 + 1/3 + 1/4 +........+ 1/49 + 1/50.
C = 1/2 + 1/4 + 1/6 +.........+ 1/48 + 1/50.
CMR A = B - 2C.
Minh dang can gap. Ai biet thi chi giup minh nhe ! Cam on moi nguoi nhieu lam.
tim x
5/6x−3/4=−1/4+2/3
−1va1/2−2/3x=5/6−(−2/5)
(4/5:x+1,5):2/3=−1,5
4/3x−2/3=1/4−x
giup minh nhe minh dang can gap
Tim n€Z , biet:
a) n+8/n-5 la so nguyen.
b)n2+1/n-6 la so nguyen.
Giup minh voi minh dang can gap .
Lam chi tiet ho minh nha.
CMR :
1/1.2 + 1/3.4 + 1/5.6 +.........+ 1/49.50 = 1/26 + 1/27 +.......+ 1/49 + 1/50.
Tim cac gia tri cua x de cac bieu thuc sau day nhan gia tri am :
a) x2 + 5x = A.
b) 3.(2x + 3) . (3x - 5).
Ai biet thi chi giup minh hai bai toan tren nhe ! Xin cam on moi nguoi. (Cang nhan cang tot,hihi)
Bai 1. 12 chia het ( x + 3 )
bai 2. Tim so tu nhien x, biet 6x + 4 chia het cho 2x
cac ban nho giai chi tiet giup minh nha cam on
Tìm x biết :
\(\frac{x}{2}-\frac{2}{3}\left(3x-2\right)=\left(-\frac{1}{2}\right)^3\)
Ai biet giai thi giup minh voi minh like cho minh dang can gap .
a) tim gia tri nho nhat cua bieu thuc : A = | 1-x | + 8
b) tim cac so nguyen x biet 13 la boi cua x - 4
c) tim so nguyen x sao cho ( x + 5 ) chia het cho ( x + 3 )
giup minh voi! minh can gap gap gap.....
Tim x e N biet:
a, 4x + 13 =29
b, x3 - 11 = 4100 : 498
c, 102 + 2 . ( x - 4 ) = 120
d, 3 x+1 + 5 . 3x = 102 - 22 . 7
moi nguoi giup minh voi nha, minh dang can gap lammmmmm ! cam on nhieu ~~~
tim x biet : (11/12+11/12.23+11/23.24+...+11/89.100) + x = 2/3
giup minh voi minh dang can gap xin cam on nhieu