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in Algebraic Expressions by (49.3k points)
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To get – x2 – y2 + 6xy + 20, what is to be subtracted from 3x2 – 4y2 + 5xy + 20?

1 Answer

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Best answer

Required expression

= (3x2 – 4y2 + 5xy + 20) – (- x2 – y2 + 6xy + 20)

= 3x2 – 4y2 + 5xy + 20 + x2 + y2 – 6xy – 20

= 4x2 – 3y2 – xy

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