# Factor

Pronunciation: /ˈfæk.tər/ Explain

To factor is to divide an expression into parts which, when multiplied together, generate the original expression. For example if one factors 5t + 5 one gets 5(t + 1)

This can be tested by using the distributive property of multiplication to multiply 5 and t + 1 to get 5t + 5.

A factor of a number 'j' is another number, say 'i', that divides 'j'.

### References

1. McAdams, David E.. All Math Words Dictionary, factor. 2nd Classroom edition 20150108-4799968. pg 77. Life is a Story Problem LLC. January 8, 2015. Buy the book
2. Boyden, Wallace C.. A First Book in Algebra. pp 76-88. www.archive.org. Silver, Burdett & Company. 1894. Last Accessed 7/11/2018. http://www.archive.org/stream/firstbookinalgeb00boydrich#page/76/mode/1up/search/factor. Buy the book
3. Schultze, Arthur. Advanced Algebra. pp 8-17. www.archive.org. The Macmillan Company. 1906. Last Accessed 7/11/2018. http://www.archive.org/stream/advancedalgebra00schugoog#page/n24/mode/1up/search/factor. Buy the book

• McAdams, David E.. Factoring Polynomials. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 2/3/2010. https://www.allmathwords.org/en/f/factoringpolynomials.html.

McAdams, David E. Factor. 4/20/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. https://www.allmathwords.org/en/f/factor.html.

### Revision History

4/20/2019: Modified equations and expression to match the new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)