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Q: What is the algebraic expression for the product of 2 and a number?

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9*(x+ 2)

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The variable is d, in the algebraic expression 7d+2

7x + 2

An algebraic expression has 2 or more terms in it without an equality sign.

(x/7)2

32 - n/2

A constant in an algebraic expression is a number that does not change. For example x + 2 The 2 is a constant (does not change) x is a variable (can take on any value)

2(n+7)

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Numerical Expression: 1.) 20+2-8 ( Or any other number with two symbols on math ) Algebraic Expression: 2.) h x 2 ( Or any other number using only one symbol an a letter ) The difference between a numerical and algebraic expressions is that numerical expressions use only numbers, but algebraic expressions use letters as variables to represent numbers.

Where the number=n: (n/2)+8.

n = number 2(n + 15) ======

An algebraic expression would be something like d / 2, or f + 3.

x/y - 4 = 2

(3x+15)/2