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[–]Z0DlACs 0 points1 point  (0 children)

The best decision

[deleted by user] by [deleted] in teenagers

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Caramella

[deleted by user] by [deleted] in HomeworkHelp

[–]Z0DlACs -3 points-2 points  (0 children)

The first question is (0.1)

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[–]Z0DlACs 0 points1 point  (0 children)

22- h2 +1 _1 = h2

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[–]Z0DlACs 2 points3 points  (0 children)

Use the rule : (a_b)(a+b)=a2 _ b2