x1.x2...x2016
= x1+2+...+2016
= x2 033 136
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1/2×x+2/3×x−1=3 1/3
giup mik luon voi a
a) x+x+2.x=76:2
b)2.x=x+14
c)2.x-3/5=3/4
d)3/5-2.x=1/4
júp mik voi mik dang gap.Thanks truoc
/2.x-3/=x-1
lam giup mik voi
bai 5 : tinh
a) tim x , biet (x+1) +(x+2 ) + ...+(x+100)=5750
b) chung minh rang B = 1/2^2 + 1/3^2 + 1/4^2 + ...+1/2021^2 < 1
giup mik luon voi
giup mik voi!!
a) 3^x+x^2=1
b) (3x-14)^n=1
c) (5^2x.5^x+1):5=125
3^x+3^x+1+3^x+2=243.39
giup mik voi tim x biet
1, 5-(3x+6)>-2x+1
2, -7.(x+2)-3x<6-11x
3, (x+1).(x+2)-x.(x+3)<4-x
4, 6-2x>17+(4-x)
y=(x+2)/(x+1)
Ae jup mik voi
1) tinh hop ly
(81 x 19 + 81 x 27) : 81
giup cho mik bai nay voi
7.(x-5)-3.(4-x) tai gia trij x =-1
giup mik voi,mikddang can gap