15- |x - 2| = 12
|x - 2| = 3
x - 2 = 3 => x= 5
x - 2= -3 => x = -1
{-1 ; 5}
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15- |x - 2| = 12
|x - 2| = 3
x - 2 = 3 => x= 5
x - 2= -3 => x = -1
{-1 ; 5}
tap hop cac so nguyen x thoa man 15-|x-2|=12
Tap hop cac so nguyen x thoa man /+2/ = 10 la
so phan tu cua tap hop cac so nguyen x thoa man:15-lx-2l bang 12
tap hop cac so nguyen x thoa man -2 ^.Ix+1I=-2^6 la
Tap hop cac so nguyen x thoa man : |7-x|=|x+3| la
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 : 45 - |-27 - (-25) - x| = -7 + 27 la
Tap hop cac gia tri nguyen x thoa man (x^2+4x+13):(x+4) co so phan tu la
tap hop cac so nguyen x thoa man ( /x-2013/+2014)(xMU 2 +5 ) ( 9-x mu 2 ) =0 la S