1
Question
−2(1−m2)−4m2−(2−m2)equals
−2(1−m2)−4m2−(2−m2)equals
6m2+6
−6m2−6
6m2+6
−6m2+6
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Solution
The correct option is D −6m2+6
−2(1−m2)−4m2−(2−m2)
=−2+2m2−4m2−2+m2
=−2+2m2−42m2−2
=−2+2m2−8m2+8
=−6m2+6
−6m2+6
−2(1−m2)−4m2−(2−m2)
=−2+2m2−4m2−2+m2
=−2+2m2−42m2−2
=−2+2m2−8m2+8
=−6m2+6
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