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Maths Puzzle
Quadratic Equations
How would I start to graph the equation x^2 - 6x + y^2 - 4y +4 = 0??
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If I have 10 gallons of a 35% solution and I want to dilute it with water so that I have a 25% solution, how many gallons of water do I add?
How would I start to graph the equation x^2 - 6x + y^2 - 4y +4 = 0?? the 2's behind the x and y are used to explain the square of the variables