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Question

Find the sum of 5x²+3xy4y² and9x²+6xy+7y².

A
4x²+9xy+3y²
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B
4x²9xy3y²
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C
4x²9xy+3y²
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D
4x²+9xy3y²
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Solution

The correct option is A 4x²+9xy+3y²
5x²+3xy4y²+(9x²+6xy+7y²)
=(5x²9x²)+(3xy+6xy)+(4y²+7y²)
=4x²+9xy+3y²

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