'''Quadratic forms''' are functions expressed as multivariable equations in [[linear algebra]] that have no combined power larger than two. When represented by [[matrices]], they have a geometric significance as a shift or transformation in coordinates.
+
'''Quadratic forms''' are functions expressed as multivariable equations in [[linear algebra]] that have only combined power of two. When represented by [[matrices]], they have a geometric significance as a shift or transformation in coordinates.
A quadratic form ''q('''x''')'' can be written as:
A quadratic form ''q('''x''')'' can be written as: