Final Answer
Step-by-step Solution
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Add and subtract $\displaystyle\left(\frac{b}{2a}\right)^2$
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$\sqrt{x^2+12x+36+36-36}$
Learn how to solve problems step by step online. Factor by completing the square (x^2+12x+36)^1/2. Add and subtract \displaystyle\left(\frac{b}{2a}\right)^2. Factor the perfect square trinomial x^2+12x+36. Subtract the values 36 and -36. Cancel exponents 2 and \frac{1}{2}.