Answer:
1) If the function is
, 
2) If the function is
, 
3) If the function is
, 
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
f(6) means that you must substitute x=6 into the function above.
1. If the given the function
, you obtain:

2. If the function is 
Then:

3. If the function is 
Then:

Answer:
7x^2+5x
Step-by-step explanation:
Given
Polynomial 1: 9x^2+8x
Polynomial 2: 2x^2+3x
We have to find subtraction of both
So,
9x^2+8x - (2x^2+3x)
First of all the brackets will be eliminated by multilying the minus sign
9x^2+8x-2x^2-3x
The terms with same power of variable will be written together
9x^2-2x^2+8x-3x
=7x^2+5x ..
Next multiples of the unit fraction 1/5 are
2/5
3/5
4/5
5/5 = 1
Hope this helps.. :)
2x6=12
3x6=18
12+18=22
2x3=6
2x6=12
6+12=18