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No.
24
4m * 3.2m = 12.8 m2
(m + 5)(m - 1) = 7 m2 + 4m - 5 = 7 m2 + 4m - 12 = 0 (m + 6)(m - 2) m = -6, 2.
4m * 4 m = 16 m2