Timf x biet
1)(2x-1)^2-(4x^2-1)=03) (x-5)^2-x(x+2)=55)(x-3)(x+3)=(x-5)^27) (3x+1)^2-9x(x-2)=259)(x+2)^2-9(x-2)=2511) (3x-2)^2-(3x-5)(3x+2)=0
Đăng ký qua Facebook hoặc Google: