/x/-x=16=>/x/=16+x
=> có 1 trường hợp
+)x=16+x=>x-x=16=>0=16( vô lí)
+)x=-(16+x)=>x=-16-x=>x+x=-16=>2x=-16=>x=-8
Vậy x=-8
Tick nhé
Cho M :x-2/x+3
a, Tim x € Z de M co gia tri nguyen
b, Tim x € Z de M la gia tri nho nhat . Tim gia tri nho nhat do
cho f(x)=\(\frac{x+2}{x-1}\)
a)tinh f(7)
b)tim x de f(x)=\(\frac{1}{4}\)
c)tim x de f(x)>1
Tim x de !2 x-3!- x=!2- x!
cho c =x^10-x^5+x^2-x+1 tim x de c =0
Tim x thuoc Z de |x-2|+|x-4| dat gia tri nho nhat . Ban nao giai thich de hieu chut nha !
tim x thoa man de bai /2-x/=x-2
tim x nguyen de |x+1| + |3+x| +|5+x| = 4x
1. Tim gia tri cua x de: l2x - 3l + l2x + 1l = 4
2. Tim gia tri cua x de: ll4x - 2l - 2l = 4
Cmt them loi giai nhe
tim x de x>2x
b, x^3<x^2