TH1:|7-x|=|x+3|
=>7-x=x+3
-x-x=3-7
-2x =-4
x = \(\frac{-4}{-2}\)
x = 2
TH2:|7-x|=|3+x|
=> 7-x =-(x+3)
7-x =-x-3
-x+x =-3-7
0 =-10 (sai)
=>x =2
tap hop cac so nguyen x thoa man : 45 - |-27 - (-25) - x| = -7 + 27 la
1/so cac so chan co cac chu so khac nhau lap tu cac chu so 1;2;3;4
2/so cac so nguyen thoa man /-12x+7/=40 la
3/tap hop cac so nguyen x thoa man /7-x/=/x+3/ la
2 nguoi nhanh nhat se duoc like
tap hop cac so nguyen x thoa man |7-x|=|x+3| la {...}.(neu tap hop co nhieu phan tu,nhap theo thu tu tang dan, cach nhau boi dau ";")
tap hop cac so nguyen x thoa man (x^2+4x+7)chia het cho (x+4) la
tap hop cac so nguyen x thoa man 15-/x-2\=12 la
Tap hop cac so nguyen x thoa man /+2/ = 10 la
tap hop cac so nguyen x thoa man -2 ^.Ix+1I=-2^6 la
Tap hop cac gia tri nguyen x thoa man (x^2+4x+13):(x+4) co so phan tu la
tap hop tat ca cac so nguyen x thoa man ( 2- x ).(x+7) = 0