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If x^2+6x=9, what is the value of (x+3)^2? The answer is 18. I completed the square but i'm not sure what to do next? I think, therefor I am...? What is the weight in kilograms of a string of pipe that is 11,500 ft long and weighs .33 pounds per inch? Does taking an Antioxidant supplement interfere with taking an Nitric Oxide precursor? Are zebras real?