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Add and subtract $\displaystyle\left(\frac{b}{2a}\right)^2$
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$n^2-8n+12+16-16$
Learn how to solve problems step by step online. Factor by completing the square 12-8nn^2. Add and subtract \displaystyle\left(\frac{b}{2a}\right)^2. Factor the perfect square trinomial n^2+-8n+16. Subtract the values 12 and -16.