suy ra hai truong hop
1 : x-2011=x-2012
suy ra x-x=2011-2012(loai)
2 : x-2011=-(x-2012)
suy ra : x-2011=-x+2012
2x=2011+2012
2x=4023
x=2011.5
kho..................lam............................tich,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,minh..........................troi........................ret............................wa.................ung ho minh.................hu....................hu..............hu................hat..............hat....................s
Cau a biet lam roi de lam cau b cho:
Ta thay:tong 2 so hang do la tong 2 so tu nhien lien tiep nen se la so le (*) ma 2012 la so chan(trai voi "*")
=>Khong ton tai so nguyen x thoa man
Vay khong ton tai so nguyen x thoa man
Phạm Gia Bảo trả lời sai rồi
|x-2011|=x-2019
=> |2011,5-2012|=2011,5-2012
=>0,5=-0,5(vô lý)(mình lấy kết quả của bạn Phạm Gia Bảo)
mik...ko...làm...đc...nha...bn...bn...thông...cảm...nha...!
