To "evaluate" an expression, you need to know the value for the variables.
The expression 3x + 2 represents the sum of three times a variable x and the constant 2. This is an algebraic expression that can be simplified by combining like terms. To evaluate this expression, you need a specific value for x.
Say you had the letter X and you had to times it by 3 then add two the algebraic expression would look like this: 3X + 2 You sometimes need to remember bidmas which helps you remember which part of the sum you do 1st B racets I ndicies D ivision M ultiplication A ddition S ubtractraction Division and multiplication can go the other way around and that's the same as addition and subtraction. If you have to change the algebraic expression back it would be like this 5(x+y) _____ that would be X + Y x 5 / 7 7
Well, isn't that a happy little math problem! To find 3x plus 12, you simply need to multiply 3 by the value of x and then add 12 to the result. It's like painting a beautiful landscape, just follow the steps and you'll have your answer in no time.
The algebraic expression for the sum of x and 9 is x + 9. In this expression, x represents a variable that can take on any value, and 9 is a constant. When you add x and 9 together, you are combining the variable x with the constant 9 to get the sum. This expression can be simplified further if needed, but the basic form is x + 9.
To evaluate an algebraic expression means to simplify the expression as much as possible by replacing the variables in an expression with the numerical values given to you.Ex:Example of Evaluating an Algebraic ExpressionTo evaluate the algebraic expression '4.5 + x' for x = 3.2, we need to replace x with 3.2 and then add. 4.5 + x = 4.5 + 3.2=7.7Solved Example on Evaluating an Algebraic ExpressionEvaluate the algebraic expression p + 3q + 2p - 3q, for p = 2 and q = - 5.Choices:A. 12B. 18C. 3D. 6Correct Answer: DSolution:Step 1: p + 3q + 2p - 3q [Original expression.]Step 2: = (p + 2p) + (3q - 3q) [Group the like terms together.]Step 3: = 3p [Solve within the grouping symbols.]Step 4: = 3 x 2 [Substitute 2 for p.]Step 5: = 6 [Multiply.]
To "evaluate" an expression, you need to know the value for the variables.
An algebraic expression need not be a difference of two terms.
The answer to the question is given in the question!If you want to find the value of an algebraic expression, then you need to substitute numerical values for each of the variables in the expression, and then calculate and simplify the result.
By itself you cannot. You need to have a set of values for the variables and the expression which you need to solve.
You cannot write an algebraic expression for that, you need an equation. The equation is n - 6 = 4
You convert an (infix) expression into a postfix expression as part of the process of generating code to evaluate that expression.
When you have an algebraic expression with variables in it, you need to know the the value of each variable. The value of the expression is found by replacing the variables with their values and simplifying. For example, evaluate 2xy-3x if x=5 and y=-1. 2xy-3x = 2*5*(-1) -3*5 = -10-15 = -25.
It may need an answer but only equations include an equality sign
Need more context
I think it is important because you need to know it when you get older.
first of all you need to simplify it in the form of a+b