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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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$x^2-12x+36-36=58$
Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation x^2-12x=58. 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. The square root of 36 is . Multiply -1 times 6.