(a + b – c)2 is equal to
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Answer:
={ ( a + b ) + c }²
=( a + b )² +2( a + b ) c+ c²
=( a²+ 2ab + b² ) + (2ac + 2bc ) + c²
= a²+ 2 ab + b² + 2ac + 2bc + c²
= a² + b² + c² + 2ab +2bc +2 ca .
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Answered by
2
Answer:
a2+b2-c2....I guess it is the answer
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