Giải phương trình \(\sqrt{2x^2+3x-1}=3-x^2\)

Cho bất phương trình x²-2mx+2|x-m|-m²+2>0

Tìm m để bất phương trình nghiệm đúng với mọi x thuộc R

1. The club has member fro many diferrent cultural.......

A. nations B. features C. maners D. backgrounds

2. Get off the bus.......it stops.

A. so quick as B. so fast as C. so soon as D. as soon as

3. Today's top sports people receive a lot.......money in the past.\

A. much B. many C. more D. most

4. People aren't working because it is a holiday. The children..........go to school either.

A. don't have to B. mustn't C. don't D. haven't to

1. In some countries, it is...........(custom) for the bride to wear white.

2. The disease spreads quickly under.........(favour) condition.

Giải bất phương trình

2x²-|5x-3|<0

Giải phương trình

|x²-1|=1-|x|

Tìm tham số m để phương trình x²+2(m-1)x+3m-2=0 có 2 nghiệm trái dấu x₁,x₂ thỏa mãn \(\frac{1}{x_1}=3=\left|\frac{1}{x_2}\right|\)