Parts of Algebraic Expressions
How many terms are in the following expression: 2x-3y + 5 - 3x - 8
5 terms
Simplify:
3 x a
3a
Substitute x=4 into the expression:
x+3
Answer: 7
Simplify.
-3x + 12 - 16 + 7x
4x - 4
Define Constant
A value that does not change. A number or term that has no variable part.
What terms is a "like term" along with 6m in the following expression:
0.5p + 6m - 5 + 1.5p - 12.5m + 2
-12.5m
Simplify:
2a x 4
8a
Substitute a=5, b=2 into the expression:
3a+b
Answer: 17
Simplify.
-15m - 26 + 12x - 12 + (-3m)
12x - 38
Define Coefficient
A number that multiplies a variable. The number part of a term that has a variable.
What is the constant in the following expression:
2y - 5 + 7x
-5
Simplify:
5a x 3b
15ab
Substitute m=6, n=2 into the expression:
m2−4n
Answer: 28
Simplify.
12p + 9p - 6p + 14 - 26 + 2p
17p - 12
A mathematical phrase represented by numbers and/or variables separated by operation symbols.
What are the coefficients in the following expression:
7 + 4p - 5 - p + 2q
4, -1 and 2
Simplify:
12a/3
4a
Substitute x=3, y=2 into the expression:
2x2+3y−4
Simplify.
-8g + 12 - 15g - 2g - 17
-25g - 5
What makes algebra different from other branches of math?
Algebra contains variables
How many terms are in the expression:
1.4y + 5 - 4.2 - 5y + z - 10
6 terms
Simplify:
18a2b/6ab
3a
Substitute a=2, b=−3, c=4 into the expression:
a2+bc−2b
Answer: -2
Simplify. -8x + 12 -8x + 15 + 15x - 22 - x
-2x - 5
Equations have equal signs and are created by setting two expressions equal to one another. Expressions cannot have equal signs.