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Finding the Value of an Expression

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Question

Add the expressions $4 p^{2} - 2 p q$ and $4 p q - p^{2}$

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Solution

$= (4 p^{2} - 2 p q) + (4 p q - p^{2}) = (4 p^{2} - p^{2}) + (- 2 p q + 4 p q) = 3 p^{2} + 2 p q$

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