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Factor the polynomial $x^2+12x$. Add and subtract $\left(\frac{b}{2}\right)^2$, replacing $b$ by it's value $12$
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$x^2+12x+36-36$
Learn how to solve problems step by step online. Factor the expression x^2+12x. Factor the polynomial x^2+12x. Add and subtract \left(\frac{b}{2}\right)^2, replacing b by it's value 12. Now, we can factor x^2+12x+36 as a squared binomial of the form \left(x+\frac{b}{2}\right)^2. Calculate the square root of 36.