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.
The algebraic expression "twice a number z" can be represented as 2z. In this expression, the variable z represents the unknown number, and multiplying it by 2 gives you twice that number. This expression can be used in algebraic equations and formulas to represent scenarios where a number needs to be doubled.
4x
2b
algebraic expression
10n
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
The algebraic expression "twice a number z" can be represented as 2z. In this expression, the variable z represents the unknown number, and multiplying it by 2 gives you twice that number. This expression can be used in algebraic equations and formulas to represent scenarios where a number needs to be doubled.
The algebraic expression for three subtracted from a number can be represented as ( x - 3 ), where ( x ) is the variable representing the unknown number.
2n
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,