2^-1.2^x+4.2^x= 9.2@^5
tim x ho minh nhe
2x -1.2x + 4.2x=9.2^5
a,Cho biêt x va y la hai đai luong ti lê thuân biêt khi x=2 thi y=7 tim hê sô ti lê
b,tinh gtri cua y khi x=5 , tinh gtri cua x khi y =1/2
Giai guip mk nha
tìm x biêt 1/1.2+1/1.3+...+1/99.100.2014x=1/51+1/52+....+1/100.2013
giúp mk vs
1,Tìm x, biết:
a, |x|+1/3=4/5
b, |x+2/3|=1/4
c, |x-3/4|-2/3=3/5
d, 1/4+2.|2/3-x|=3/4
e, 16^x:4^x=16
g, (2x+1)^3=-64
h, 2^x/2+4.2^x=72
2,Tính
A=(1/2-1).(1/3-1).(1/4-1).....(1/2015-1)
B=1/1.2+1/2.3+1/3.4+...+1/2014.2015
tim x, y , z biêt
5z-6y/4= 6x-4z/5= 4y-5x/6 và 3x -2y + 5z = 96
tim nghiem cua da thuc M(x);
M(x)=2.5x2+3.7x+1.2
Tìm x biêt:|x|+|x+1|+|x+2|+|x+3|+|x+4|=6x
tìm x nguyên biêt : \(\left(x-3\right)^2\) + \(\left(x-2\right)^2\) + \(\left|x-1\right|\)+ x = 2019