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Can you get liquid mercury from a fluorescent lightbulb containing mercury? Need help with an Algebra problem! How do you solve 12x^2 -5x=2 by using the quadratic formula? 4(2x-3)<12? Two point charges, q₁= +5 nC and q₂= +4 nC, are located on the x-axis at x= 0 and x=5.00 m. What is the electric field at point x=1.41 m? Find the directional derivative of f(x,y) = x/y at the point (2, -4)?