−2(1−m2)−4{m2−(2−m2)}=______. – InterviewSolution

1.	−2(1−m2)−4{m2−(2−m2)}=______.
Answer» $- 2 (1 - m^{2}) - 4 {m^{2} - (2 - m^{2})}$ =______.

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