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Questions  >>  Olympiad-Math  >>  Class 9  >>  Polynomials
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The expression (a + b + c)^2 + (a + b – c)^2 + (a – b + c)^2 + (b + c – a)^2 equals ____.


( A ) 4(a^2 + b^2 + c^2)
( B ) a^2 + b^2 + c^2
( C ) 2(a^2 + b^2 + c^2)
( D ) 2(ab+bc+ca)

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