Define Parts of an Expression
What is a variable?
A letter (or other symbol) that holds the place of a value.
Are the terms 3x and -5x like terms?
Yes
Simplify
5a - 3a + 7
2a + 7
What is the variable in
3x + 5?
x
Simplify 3(2x - 6)
6x - 18
What is a coefficient?
The number being multiplied to a variable.
Are the terms 3x and 3x2 like terms?
No
Simplify
6b + 7 - 9b
-3b + 7
What is the constant in
3x + 5y - 8?
-8
Simplify -4(5x + 2)
-20x - 8
What is a constant?
A value without a variable.
Are the terms 5xy and -2xy like terms?
Yes
Simplify
6m - 4n + 8m +3
14m - 4n +3
What is the coefficient of the variable b in the expression
8a - 4b + 7?
-4
3(3x - 4) + 1
9x - 11
What is a term?
A number, a variable, product of two or more variables or product of a number and a variable.
Which two terms are like terms in the expression
5x + 2xy - 8x?
5x and -8x
Simplify
6b - 4a + 2a - 3b + 1
-2a + 3b + 1
How many terms are in the expression
5a - 2b + c - 10?
4
Simplify
-4(2x - 5) + 6x
-2x + 20
What is an expression?
A mathematical statement that has at least two terms containing numbers, variables or both connected by an addition or subtraction symbol
Which two terms are like terms in the expression
3a + 2ab - 4a2 - 6ab?
2ab and -6ab
Simplify
4+ 5a2 + 8a - 2a - 3a2
2a2 + 6a + 4
What is the coefficient of the y variable in the expression
5x + y - 6?
1
Simplify
-3(-5x + 1) + 2x + 8
17x + 5