- Why does tincture of iodine contain some potassium iodide?

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Convert the polar equation to rectangular equation r=4cos0? If the equation y = x + 4 is changed to y = x - 2, how will the graph of the equation change? Solve the following system of equations. x + y = 12
x – y = 6? Use interval notation to indicate where f(x) is continuous.... f(x)=8x^8-3x^4+1? 3x^3 -4y^4=2 How can I determine if this is a function or not?

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