quadrant quarter of a circle
quadrant the four regions in a number planequadrants
quadratic any expression with x2 as the highest power of x. The general form of a quadratic is ax2 + bx + c = 0
quadratic equation see quadratic
quadratic formula   to solve quadratic equations $$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$$
quadrilateral a four sided polygon. Examples include: square, rectangle, rhombus, parallelogram, kite.
quartic any expression where x4 is the highest power of x
quintic any expression where x5 is the highest power of x
quotient the answer to a division problem

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