So gia tri nguyen cua x thoa man : /x2-5/+/5-x2/=40
/.../ la gia tri tuyet doi.
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
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 x<0 thoa man gia tri tuyet doi cua 2x - 1 = 3mu 2 la x=....
so cac so nguyen x thoa man -12x +7=40 va -12x +7 nam trong gia tri tuyet doi
|-12x+7|=40
=>-12x+7=±40
Với -12x+7=40=>-12x=33
=>x=-33/12
Với -12x+7=-40=>-12x=-47
=>x=47/12
Tap hop cac so nguyen x thoa man gia tri tuyet doi -17-7=7
tim x thoa mam
gia tri tuyet doi cua 3x-5=gia tri tuyet doi x+7
\(\left|3x-5\right|=\left|x+7\right|\)
\(\Rightarrow3x-5=x+7\)
\(\Rightarrow3x-x=5+7\)
\(\Rightarrow2x=12\)
\(\Rightarrow x=6\)
Đáy chỉ là 1 trường hợp thôi nha
cho a,b la cac so nguyen thoa man
2018a2-20192=a-b
chung minh gia tri tuyet doi cua a-b la so chinh phuong
cho a va b la hai so nguyen khac dau. khi do gia tri tuyet doi cua a nhan gia tri tuyet doi cua b = k.a.b. vay k =?