Final Answer
Step-by-step Solution
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Add and subtract $\displaystyle\left(\frac{b}{2a}\right)^2$
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$x^2+18x+49+81-81$
Learn how to solve factor problems step by step online. Factor the expression x^2+18x+49. Add and subtract \displaystyle\left(\frac{b}{2a}\right)^2. Factor the perfect square trinomial x^2+18x+81. Subtract the values 49 and -81.