Functions
If f(x)=2x+3 find f(4).
f(4)=11
5^7/5^3
5^4=625
x+7=15
x=8
4+3×2
10
A symbol used to represent one or more numbers
Variable
If f(x)=-3x-10
Find f(6)
f(6)=-28
(2x^3)^4
16x^2
5x=20
x=4
(5+3)×2
16
There is no value, not even 0, which would satisfy the equation.
No solution
Given: f(x)=x^2−5
Find: f(6)
f(6)=31
3^2×3^4
3^6=729
2x+3=11
x=4
12÷3+4×2
12
A single number, variable, or product of numbers and variables.
Term
f(x)=x^2+2x
Find f(-2)
f(-2)=0
(x^3)^2
X^6
4x−5=3x+2
x=7
(6+2)×(5−3)^2
32
a combination of individual terms separated by plus or minus signs
Expression
f(x)=x^3+2x
Find f(5)
f(5) =135
(3x^2y^3)^2 / 9x^3y
xy^5
-2+x+5=3-(1-2X)
x=1
18÷(3×2)+4^2−(6−2)
15
Equation