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Question

Add the following algebraic expressions:
4xy2 – 7x2y, 12x2y -6xy2, -3x2y + 5xy2

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Solution

4xy2 – 7x2y, 12x2y -6xy2, -3x2y + 5xy2

Let us add the given expression

4xy2 – 7x2y + 12x2y – 6xy2 – 3x2y + 5xy2

( 1 mark )
Upon rearranging

= 12x2y – 3x2y – 7x2y – 6xy2 + 5xy2 + 4xy2

( 0.5 marks )
= 3xy2 + 2x2y
( 0.5 marks )


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