tim x biet 

a) 4(x+1)^2-9(x+2)^2=0

b) 4(x+1)^2+(2x-1)^2-8(x+1)(x-1)=11

giai cach lam giup minh nha

Cac ban oi giup minh voi 

tim x biet 6.4/x=x/99tim cac so nguyen biet (|x|-3)(x^2+4) be hon hoac bang 4hai dia diem a va b cach nhau 90kmhai nguoi di xe dap cung mot luc tu ava bde gap nhau va ho gap nhau cach a 50km;nhung neu nguoi di tu b di nhanh hon xuat phat truoc nguoi a 1 gio thi ho gap nhau cach a 350/9km tinh van toc moi nguoi

Cac giai ho minh voi minh se tick cho

Cac ban nho viet ho cach lam min voi

giup minh nha giai day du minh 3 tick cho

tim x biet(x-1)+(x-2)+..+(x-2014)

 

tim x thuoc Z biet:

|x-5|+x+3=16

|x-4|>x+2

||x+5|-4|=3

Cach lam nua nhe

minh chua biet cach lam,cac ban phaiviet cach lam vao minh moi tick

ko bat buoc lam tat ca cac cau

moi nguoi oi giup minh voi, ca cach giai nua nhe, dung thi minh se tich cho. thank you moi nguoi

tim x biet 

x^2 - 1 < 15

Tim x biet:

a,10+x / x+17=3 / 4

b'40+x / 77-x=6/7

Lam nhanh va cach lam day du minh se tick

giup minh tim x va cach giai vs nha :2/3x(x+1)=4/5

Tim x biet:

a,10+x / x+17=3 / 4

b'40+x / 77-x=6/7

Nho viet ca cach lam nua nhe ,ai lam day du minh se tick!

Tim x. x-1/x+5=6/7

x-2/x-1=x+4/x+7

{ giai giup minh minh tick cho}