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 #
Discrete Algebra and Geometry.
First outer inner last(in that order).
3r-2 for r=65
R "all reals"
I want to stand on my own three feet
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.
Discrete Algebra and Geometry.
R. Righi has written: 'Algebra di Boole ed applicazioni ..' -- subject(s): Boolean Algebra
William R. Gondin has written: 'Advanced algebra and calculus madesimple' 'Advanced algebra and calculus'
Difference of two squares.
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
Radical or radicand
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First outer inner last(in that order).