is:
_________
x = -b + - 
(b2
- 4ac)
2a
MATH DICTIONARY
Q
quadrant: one of the quarters of the plane of
the Cartesian coordinate system
quadratic equation: an equation involving the second power, but no higher power of an
unknown. The general form of a quadratic equation in two unknowns is:
Ax2 + Bxy + Cy2 + Dx + Ey + F = 0.
quadratic formula: the formula that says that the solution to the equation ax2 + bx + c = 0
is:
_________
x = -b + - (b2
- 4ac)
2a
quadrilateral: a polygon with 4 sides.
quartic: a polynomial of degree 4.
quintic: a polynomial of degree 5.
quotient: the answer to a division problem.
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