heplaihp92
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CHa? la` co cac phuong trinh bac 3 khi giai ra may tinh ra 3 nghiem deu le?(ko tim` nghiem mo`dc dau nha)
MInh chua biet lam cach bien doi the nao de viet ra dc nghiem chuan
Hi tra loi gium nha
MInh chua biet lam cach bien doi the nao de viet ra dc nghiem chuan
Hi tra loi gium nha