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Ashleigh Stuart
Mathematics
18 June, 04:27
What is the answer to 5<3+w
+5
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Lawrence Chang
18 June, 04:41
0
An expression is one or more terms in an algebraic phrase. An expression does not contain the = sign because it is a phrase. Some examples of algebraic expressions are 2x, 5x + 3, 8m - 5m + 10
Evaluate an Algebraic Expression
To evaluate an algebraic expressiontext annotation indicator for x = 3, means to replace the variable x with the number 3 and then simplify by following order of operations.
Example:
Evaluate the following expression for x = 3.
3 xtext annotation indicator + 5
3 (3) + 5text annotation indicator
= 9 + 5
= 14
Write an Algebraic Expression
To write an algebraic expression, look for key words that tell you what operation (add, subtract, multiply, or divide) to use.
Example:
Write an algebraic expression for: The product of x and 5.
The key word here is product. You may recall that a product is the answer obtained when you multiply. That means we want to multiply x and 5, so we write the expression as 5 x. It should be written the standard way by putting the coefficient in front of the variable.
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