In algebra we consider x,y and z are variables.
Chat with our AI personalities
x, y, z are variablesa, b, c, etc. are constants
Variables mean whose values are not constant, such as x, y , z this is in algebra
A variable is a symbol that represents an unknown or changeable number, typically a letter such as x, y, and z.
Any letter in the alphabet can be used to represent a variable in algebra.
(x - y)2 - z2 is a difference of two squares (DOTS), those of (x-y) and z. So the factorisation is [(x - y) + z]*[(x - y) - z] = (x - y + z)*(x - y - z)