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Tìm m 1) $(m-1)^{2}$ ≥ 0 ⇒ .......... 2) $(m-1)^{2}$ ≤ 0 ⇒ ........... 3) $(m+1)^{2}$ ≥ 0 ⇒ ............ 4) $(m-1)^{2}$ ≤ 0 ⇒ ............ 5) $(m-1)^{2}$ $\neq$ 0 ⇒ ......... 6) $(m+1)^{2}$ $\neq$ 0 ⇒ ........
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