17 - 2 [ x ] = 11
2 [ x ] = 17 - 11
2 [ x ] = 6
[ x ] = 6 : 2
[ x ] = 3
x = 3 hoặc x = -3
17 - 2 [ x ] = 11
2 [ x ] = 17 - 11
2 [ x ] = 6
[ x ] = 6 : 2
[ x ] = 3
x = 3 hoặc x = -3
cho x ; y la cac so nguyen to sao cho gia tri tuyet doi cua x cong gia tri tuyet doi cua y bang 5 so cap so nguyen (x;y) thoa man la
/X-3/ - 7 = 9 Luu y : /x/ la gia tri tuyet doi
tim x
25+/-2+x/ =5
/-x+5/=1-5
dau // nay la gia tri tuyet doi
bai 1 so cac gia tri nguyen cua x de gia tri tuyet doi cua x + gia tri tuyet doi cua x-2 =0
bai 2 so cac gia tri nguyen cua x thoa man gia tri tuyet doi cua x-3 + gia tri tuyet doi cua 8-2x = 1 là
gia tri tuyet doi cua 2/5 -x la gi ?
gia tri tuyet doi cua -2x+3 =8 vay so gia tri cua x la
So gia tri nguyen cua x thoa man : /x2-5/+/5-x2/=40
/.../ la gia tri tuyet doi.
tim so nguyen x, biet
a. 7 - x = 8 - ( -7 )
b. x - 8 = ( -3 ) = -8
tim so nguyen a, biet
a. gia tri tuyet doi a gia tri tuyet doi = 2
b. gia tri tuyet doi a + 2 gia tri tuyet doi = 0