rationalize
the denominator can be rationalized by multiplying the numerator and the denominator by 
to give
See also conjugate surds.
- polynomial time
- polytope
- Poncelet, Jean-Victor
- pons asinorum
- pooled estimate of variance
- population
- population mean
- poset
- position ratio
- position vector
- positive
- positive angle
- positive correlation
- positive definite
- positive direction
- positively oriented
- positive semidefinite
- possible
- posterior distribution
- posterior probability
- postmultiplication
- post-optimal analysis
- postulate
- potential
- potential energy