Math, asked by suryajith8777, 2 months ago

answer please plz tell

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Answered by dhanasree1289

1

Step-by-step explanation:

P+Q+R=a2-2bc+b2-b2+bc2-c2+c2+cb-a2

cancel +a2 and -a2 and -+b2 and -+c2

-2bc+bc2+cb

-bc+bc2

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