Math, asked by omarabdulkarim1223, 1 year ago

How does +ab become -ab in this pic

Please explain

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Answers

Answered by SujalOswal

0

Step-by-step explanation:

Because, -ab = ab-2ab

(a+b)2 = A2 + B2 + 2AB

-AB which is left in the previous step

Answered by adarsh4747

0

Answer:

ab=2ab-ab

Thus it is written in that way.

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