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Step-by-step Solution
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Add and subtract $\displaystyle\left(\frac{b}{2a}\right)^2$
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$x^2+4x+1+4-4$
Learn how to solve factorization problems step by step online. Factor the expression x^2+4x+1. Add and subtract \displaystyle\left(\frac{b}{2a}\right)^2. Factor the perfect square trinomial x^2+4x+4. Subtract the values 1 and -4.