Given:

To find:
The simplified rational expression by subtraction.
Solution:
Let us factor
. It can be written as
.
using algebraic identity.

LCM of 
Make the denominators same using LCM.
Multiply and divide the first term by (x + 1) to make the denominator same.

Now, denominators are same, you can subtract the fractions.

Expand
.



Answer:
6 students at the preschool of four years old attended the full day program.
Step-by-step explanation:
Given:
Number of four years old students = 16
fraction of four years old students attended full day program = 
We need to find the number of four years old students attended the full day program.
Solution:
Now we can say that;
number of four years old students attended the full day program is equal to fraction of four years old students attended full day program multiplied by Number of four years old students.
framing in equation form we get;
number of four years old students attended the full day program = 
Hence 6 students at the preschool of four years old attended the full day program.
Answer:
x = 3 x = 7 Okay well I got C. f(x) = x2 - 10x + 21 I got it because u subtract and add at the last part.
Step-by-step explanation:
Answer:
-12.133 would be your answer