find the sum of the following algebraic expression(ii) 9x3 + 10x²y - 4xy, - 6x3 + 6xy + 9 - 12yx2
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A common or traditional definition of matter is "anything that has mass and volume (occupies space)". For example, a car would be said to be made of matter, as it has mass and volume (occupies space). The observation that matter occupies space goes back to antiquity.
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