Related articles:
Completing the square
Equation
Factorization
Galois theory
Linear equation
Parabola
Plus-minus sign
Polynomial
Quadratic function
Real number
Key terms:
ax
babylonian
beta
bx
cannot be expressed
coefficients
completing the square
complex number
cubic
derivation
discriminant
displaystyle
expressed in terms
field of characteristic
frac
galois theory
graph
graph touches
if and only if
if the discriminant
irreducible
lagrange
monic
pm
polynomial
px
quadratic
quadratic equation
quadratic formula
quadratic function
quadratic polynomial
quartic
quintic
real number
real roots
roots
sgn
smallmatrix
solving
span style
sqrt
square root
stillwell
symmetric
textstyle
tfrac
there are two distinct
vertex
xy
yields
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