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Olympiad-Math
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Class 7
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Algebraic Expressions
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Add a^2 + b^2 + c^2 – 3abc and a^2 – b^2 + c^2 + abc
( A ) 2a^2 + 2c^2 + 2abc
( B ) 2a^2 - 2c^2 – 2abc
( C ) 2a^3 + 2c^2 – 2abc
( D ) 2a^2 + 2c^2 – 2abc
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