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Add and subtract $\displaystyle\left(\frac{b}{2a}\right)^2$
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$x^2+6x+15+9-9$
Learn how to solve polynomial factorization problems step by step online. Factor the expression x^2+6x+15. Add and subtract \displaystyle\left(\frac{b}{2a}\right)^2. Factor the perfect square trinomial x^2+6x+9. Subtract the values 15 and -9.