(a+b) - (a-b) the formula
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[a+b]-[a-b]=[a+b]-a+b=2b
Answered by
8
(a+b)-(a-b)
= a+b-(a-b)
=a+b-a+b
=b+b
=2b
= a+b-(a-b)
=a+b-a+b
=b+b
=2b
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