book Maths Puzzle Numerical Ability

The question is: From a rectangular piece of cardboard having dimensions 20 inches x 30inches, aan open box is to be made by cutting out an identical square of area x2 from each co

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1=3-2x Find the wquation of the ellipse that has the endpoints of its major axis at (2,-2) and (10,-2) and the endpoints of its minor axis at (6,0) and (6, -4).