Double mean to multiply.
For example: the algebra expression 2x can be written in the English Phrases like
-Double a Number
-Twice a number
-Two of a number
-Two times a number
-or the product of two and a number.
2x - 2
2x + 7
It is 2n + 20.
2x + 5
x2+7
Let the original number be y Therefore the new number is given by the expression 2y + 6
classifacation of algebraic expression according to the number of terms
a common factor
2n
The Base in the Algebraic Expression can be a Number or A Variable. EX. 42 or X2 - 4 and X are the base.
an algebraic expression is an expression built up from constants, variables, and a finite number of algebraic operations (addition, subtraction, multiplication,division and exponentiation to a power that is a rational number). For example,
Let the number be x and so the expression is 8x