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20-02-2017
Mathematics

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Violet has a TV, a dishwasher and a refrigerator in the back of her truck. The weight of the TV is represented by 2x2 + 4x and the weight of the dishwasher is x2 + 3. What polynomial represents the refrigerator if their total weight is 5x2 + 3x + 9?

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texaschic101 texaschic101

20-02-2017

5x^2 + 3x + 9 - (2x^2 + 4x + x^2 + 3) =
5x^2 + 3x + 9 - (3x^2 + 4x + 3) =
5x^2 + 3x + 9 - 3x^2 - 4x - 3 =
2x^2 - x + 6 <===

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