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Add and subtract $\displaystyle\left(\frac{b}{2a}\right)^2$
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$x^2+9x+18+\frac{81}{4}-\frac{81}{4}$
Learn how to solve factorization problems step by step online. Factor the expression x^2+9x+18. Add and subtract \displaystyle\left(\frac{b}{2a}\right)^2. Factor the perfect square trinomial x^2+9x+\frac{81}{4}. Subtract the values 18 and -\frac{81}{4}.