5m Zen
Cho pt x 2 mx m 1 0
Cho pt x 2 mx m 1 0 pictures 5
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Cho pt x 2
Cho pt x 2 mx m 1 0
cho pt mx 2 2m 1 x m 1 0
cho pt mx^2-2m-1)x+m-3u003d0
cho pt mx^2-2m+1)x+m-4u003d0
cho pt x 2 mx m 1 0 giu1EA3i pt vu1EDBi m u003d- 2
cho pt x 2 mx m 1 0
