tim x :
a) I x+1I+I x -2I+I x+3I = 6
b) 2Ix+2I+I4-xi= 11
c) IxI - I 2x+3I = x-1
tim x :
a) I x+1I+I x -2I+I x+3I = 6
b) 2Ix+2I+I4-xi= 11
c) IxI - I 2x+3I = x-1
a) -Ix+1I+Ix+2I=x-1
b) Ix-3I- I 2x+1I
a, Tìm x,y,z biết 2x=3y ; 4y=5z và x+y+x=11
b, Tìm x biết Ix+1I+Ix+2I+Ix+2I+Ix+3I=4x
Tim x biet:Ix+1I+Ix+2I+Ix+3I+.....+Ix+2016I=2015x
a) I x+1I +I x+2I + I x+3 I = 4x
b) I x+1I +I x+2I + I x+3 I + I x+4 I = 5x
c) I x+2I +I x+3/5I + x + 1/2 = 4x
Tìm GTNN của:
a) A= I x - 7 I + 3 - x
b) B= I x+ 7I + I x + 3I + I x + 1I
c) C= I 2 - xI + I 5 - xI
tìm x
a,I2x-1I=x-2
b,I2x+1I=3x
c,I2x+1I=4
d,Ix-3I=1/2
e,Ix+1I+Ix-2I=0
f,I2x-1I+Ix+2I=0
Tìm x biết:
IxI +I-xI=3-x
I5x-3I-x=7
Ghi rõ cách làm ra nhé