r is a letter used to show the lenth, height, angle degree or point ect so it doesn't really stand for anythin
ex a 5 by r rectangle r = the lenght and could tequniqally be any #
greatest factor
Discrete Algebra and Geometry.
It stands for whatever you choose to assign to it.
First outer inner last(in that order).
3r-2 for r=65
You use variables to stand for numbers in algebra
The capital 'R' that has two vertical lines instead of one like the alphabet letter stands for "all real numbers". If it is a lower case 'r' it would probably be a variable.
greatest factor
William R. Gondin has written: 'Advanced algebra and calculus madesimple' 'Advanced algebra and calculus'
R. Righi has written: 'Algebra di Boole ed applicazioni ..' -- subject(s): Boolean Algebra
Discrete Algebra and Geometry.
Scott R Herriott has written: 'College algebra through functions and models' -- subject(s): Algebra, Textbooks
R. Orin Cornett has written: 'Algebra' -- subject(s): Algebra, Problems, exercises, Problems, exercises, etc
It stands for whatever you choose to assign to it.
Difference of two squares.
Radical or radicand
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