In the UK, factorizing. The process of reducing a number or expression to its basic elements (factors).

For example, the factors of number `45`

are the prime numbers `3 * 3 * 5`

.

To factor an expression is to rewrite it using simpler expressions, multiplied. For example, the expression

`2y+6`

when factored becomes

`2(y+3)`

.

See also Matrix Factorization.

References:

- O’Neil, Cathy. “Weapons of Math Destruction”. Penguin Books. 2016
- Pierce, Rod. “Math is Fun – Maths Resources” Math Is Fun. Ed. Rod Pierce. 18 Apr 2017. 19 Aug 2017 https://www.mathsisfun.com/algebra/factoring.html