Tớ chẳng biết có sai đề bài ko nữa: Giải phương trình :
      $\sqrt{x^{2}-x+\frac{1}{4}}=2x^{3}-x^{2}+2x+1$
thông báo vs cả nhà là đề bài này đã sai òi –  Sea Dragon 27-10-15 10:20 PM
thanks cả nhà –  Sea Dragon 22-10-15 10:02 PM
@@! bảo cô xem lại đề xem –  ๖ۣۜPXM๖ۣۜMinh4212♓ 21-10-15 11:04 PM
bleeu jin phân chim –  Sea Dragon 21-10-15 10:42 PM
magic là boy à em cứ tg là girl –  Sea Dragon 21-10-15 10:42 PM
sai đề em ơi –  ๖ۣۜJinღ๖ۣۜKaido 21-10-15 10:36 PM
k, ý a chỗ kia là cộng, k phải trừ –  ๖ۣۜPXM๖ۣۜMinh4212♓ 21-10-15 10:34 PM
em chép chuẩn đề bài mà –  Sea Dragon 21-10-15 10:20 PM
ko nhân ko chia –  Sea Dragon 21-10-15 10:19 PM
ko đề cô đưa em chỉ có zợ thui –  Sea Dragon 21-10-15 10:19 PM
chỗ 2x^3 cộng x^2 –  ๖ۣۜPXM๖ۣۜMinh4212♓ 21-10-15 10:14 PM
$2x^3 x^2 2x 1$ hay sao mà –  ๖ۣۜPXM๖ۣۜMinh4212♓ 21-10-15 10:14 PM
đặt x^ 2 - x + 1/4  =(x - 1/2)^2 rồi giải nha bạn

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