- How to solve y^2+y=((x^2)/4)cosx - (x/4)sinx +((x^3)/4)sinx?

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How many red and white dwarfs exist in the containment of the universe? How far do you have to get away from a grenade to be safe? Do you believe in ghosts and paranormal stuff? ( test )? If the distance between vertex and focus is 4, and the vertex is (2, -4); find four pairs of possible focus and directrix.? Please simplify without root and absolute value in the end?