T
theokute


Cho ham so y =x^3 +(1-2m)x^2 +(2-m)x+m+2.Tim m de ham so dong bien tren (0;duong vo cung). Giai chi tiep gium mjh vr.O phan giai bai tap tu luyen cua thay Phuong cung co giai nhung kho hieu qua.
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